Hydraena

Hydraena is a genus of minute moss beetles in the family Hydraenidae. There are more than 990 described species in Hydraena.

Systematics

There are at least 924 species in the genus Hydraena:

• Hydraena abbasigili <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena abdita <small>Orchymont, 1948</small><span style="color:gray">^{i c g}</span>
• Hydraena abyssinica <small>Régimbart, 1905</small><span style="color:gray">^{i c g}</span>
• Hydraena accurata <small>Orchymont, 1948</small><span style="color:gray">^{i c g}</span>
• Hydraena achaica <small>Jäch, 1995</small><span style="color:gray">^{i c g}</span>
• Hydraena acumena <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena adelbertensis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena adrastea <small>Orchymont, 1948</small><span style="color:gray">^{i c g}</span>
• Hydraena aethaliensis <small>Breit, 1917</small><span style="color:gray">^{i c g}</span>
• Hydraena affirmata <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena affusa <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena africana <small>Kuwert, 1888</small><span style="color:gray">^{i c g}</span>
• Hydraena akameku <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena akbesiana <small>Audisio, De Biase and Jäch, 1993</small><span style="color:gray">^{i c g}</span>
• Hydraena albai <small>Sáinz-Cantero, 1993</small><span style="color:gray">^{i c g}</span>
• Hydraena alberti <small>Balfour-Browne, 1950</small><span style="color:gray">^{i c g}</span>
• Hydraena alcantarana <small>Ienistea, 1985</small><span style="color:gray">^{i c g}</span>
• Hydraena algerina <small>Kaddouri, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena alia <small>Orchymont, 1934</small><span style="color:gray">^{i c g}</span>
• Hydraena aliciae <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena allomorpha <small>Lagar and Fresneda, 1990</small><span style="color:gray">^{i c g}</span>
• Hydraena alluaudi <small>Régimbart, 1906</small><span style="color:gray">^{i c g}</span>
• Hydraena alpicola <small>Pretner, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena altamirensis <small>Díaz Pazos and Garrido Gonzalez, 1993</small><span style="color:gray">^{i c g}</span>
• Hydraena altapapua <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena alternata <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena alterra <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena alticola <small>Skale and Jäch, 2008</small><span style="color:gray">^{i c g}</span>
• Hydraena altiphila <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena amazonica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ambiflagellata <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena ambigua <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena ambiosina <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena ambra <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ambripes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ambroides <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena americana <small>Jäch, 1993</small><span style="color:gray">^{i c g}</span>
• Hydraena amidensis <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena ampla <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena anaphora <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena anatolica <small>Janssens, 1963</small><span style="color:gray">^{i c}</span>
• Hydraena ancylis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena ancyrae <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena andalusa <small>Lagar and Fresneda, 1990</small><span style="color:gray">^{i c g}</span>
• Hydraena andreinii <small>Orchymont, 1934</small><span style="color:gray">^{i c g}</span>
• Hydraena angulicollis <small>Notman, 1921</small><span style="color:gray">^{i c g b}</span>
• Hydraena angulosa <small>Mulsant, 1844</small><span style="color:gray">^{i c g}</span>
• Hydraena angustata <small>Sturm, 1836</small><span style="color:gray">^{i c g}</span>
• Hydraena anisonycha <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena antaria <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena antiatlantica <small>Jäch, Aguilera and Hernando, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena antiochena <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena apertista <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena apexa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena appalachicola <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena appetita <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena aquila <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena arabica <small>Balfour-Browne, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena arachthi <small>Ferro and Jäch, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena arcta <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena arenicola <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena argutipes <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena ariana <small>Janssens, 1962</small><span style="color:gray">^{i c g}</span>
• Hydraena arizonica <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena armata <small>Reitter, 1880</small><span style="color:gray">^{i c g}</span>
• Hydraena armatura <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena armeniaca <small>Janssens, 1968</small><span style="color:gray">^{i c g}</span>
• Hydraena armipalpis <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena armipes <small>Rey, 1886</small><span style="color:gray">^{i c g}</span>
• Hydraena aroensis <small>(Ferro, 1991)</small><span style="color:gray">^{i c g}</span>
• Hydraena arunensis <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena ascensa <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena assimilis <small>Rey, 1885</small><span style="color:gray">^{i c g}</span>
• Hydraena ateneo <small>Freitag, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena athertonica <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena atrata <small>Desbrochers des Loges, 1891</small><span style="color:gray">^{i c g}</span>
• Hydraena atroscintilla <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena attaleiae <small>Ferro, 1984</small><span style="color:gray">^{i c g}</span>
• Hydraena audisioi <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena aulaarta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena aurita <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena australica <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena australula <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena austrobesa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena avuncula <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena bacchusi <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena bactriana <small>Janssens, 1962</small><span style="color:gray">^{i c g}</span>
• Hydraena bakriensis <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena balearica <small>Orchymont, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena balfourbrownei <small>Bameul, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena balkei <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena balli <small>Orchymont, 1940</small><span style="color:gray">^{i c g}</span>
• Hydraena barbipes <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena barricula <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena barrosi <small>Orchymont, 1934</small><span style="color:gray">^{i c g}</span>
• Hydraena bedeli <small>Berthélemy, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena belgica <small>Orchymont, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena beniensis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena benjaminus <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena bensae <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena bergeri <small>(Janssens, 1972)</small><span style="color:gray">^{i c g}</span>
• Hydraena berthelemyana <small>Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena berytus <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena beyarslani <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena bicarina <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena bicarinova <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena bicolorata <small>Jäch, 1997</small><span style="color:gray">^{i c g}</span>
• Hydraena bicuspidata <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena bidefensa <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena bifunda <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena bihamata <small>Champion, 1920</small><span style="color:gray">^{i c g}</span>
• Hydraena biimpressa <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena billi <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena bilobata <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena biltoni <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena bimagua <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena birendra <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena biseptosa <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena bispinosa <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena bisulcata <small>Rey, 1884</small><span style="color:gray">^{i c g}</span>
• Hydraena bitruncata <small>Orchymont, 1934</small><span style="color:gray">^{i c g}</span>
• Hydraena bituberculata <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena biundulata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena blackburni <small>Zaitzev, 1908</small><span style="color:gray">^{i c g}</span>
• Hydraena bodemeyeri <small>Jäch and Díaz, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena boetcheri <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena bolivari <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena boliviana <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena bononiensis <small>Binaghi, 1960</small><span style="color:gray">^{i c g}</span>
• Hydraena borbonica <small>Fairmaire, 1898</small><span style="color:gray">^{i c g}</span>
• Hydraena bosnica <small>Apfelbeck, 1909</small><span style="color:gray">^{i c g}</span>
• Hydraena brachymera <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena bractea <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena bractoides <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena brahmin <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena breedlovei <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena brevis <small>Sharp, 1882</small><span style="color:gray">^{i c g}</span>
• Hydraena britteni <small>Joy, 1907</small><span style="color:gray">^{i c g}</span>
• Hydraena brittoni <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena bromleyae <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena browni <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena bubulla <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena bulgarica <small>Breit, 1916</small><span style="color:gray">^{i c g}</span>
• Hydraena buloba <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena buquintana <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena buschietanni <small>Freitag, 2021</small><span style="color:gray">^{i c g}</span>
• Hydraena buscintilla <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena busuanga <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena calcarifera <small>Janssens, 1959</small><span style="color:gray">^{i c g}</span>
• Hydraena californica <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena campbelli <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena canakcioglui <small>Janssens, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena canticacollis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena capacis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena capensis <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena capetribensis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena cappadocica <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena caprivica <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena capta <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena carbonaria <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena carica <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena carinocisiva <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena carinulata <small>Rey, 1886</small><span style="color:gray">^{i c g}</span>
• Hydraena carmellita <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena carniolica <small>Pretner, 1970</small><span style="color:gray">^{i c g}</span>
• Hydraena castanea <small>Deane, 1937</small><span style="color:gray">^{i c g}</span>
• Hydraena castanescens <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena cata <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena catalonica <small>Fresneda, Aguilera and Hernando, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena catherinae <small>Bameul and Jäch, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena caucasica <small>Kuwert, 1888</small><span style="color:gray">^{i c g}</span>
• Hydraena cavifrons <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena cephalleniaca <small>Jäch, 1985</small><span style="color:gray">^{i c g}</span>
• Hydraena cervisophila <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena challeti <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena cheesmanae <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena chenae <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena chersonesica <small>Jäch, Díaz and Przewozny, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena cherylbarrae <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena chiapa <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena chiesai <small>Janssens, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena chifengi <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena chobauti <small>Guillebeau, 1896</small><span style="color:gray">^{i c g}</span>
• Hydraena christinae <small>Audisio, De Biase and Jäch, 1996</small><span style="color:gray">^{i c g}</span>
• Hydraena christoferi <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena ciliciensis <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena circulata <small>Perkins, 1980</small><span style="color:gray">^{i c g b}</span>
• Hydraena cirrata <small>Champion, 1920</small><span style="color:gray">^{i c g}</span>
• Hydraena clarinis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena claudia <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena clavicula <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena clavigera <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena clemens <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena clinodorsa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena clystera <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena cochabamba <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena colchica <small>Janssens, 1963</small><span style="color:gray">^{i c g}</span>
• Hydraena colombiana <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena colorata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena colymba <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena compressipilis <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena concepcionica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena concinna <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena confluenta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena confusa <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena connexa <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena converga <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena coomani <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena cooperi <small>Balfour-Browne, 1954</small><span style="color:gray">^{i c g}</span>
• Hydraena cooperoides <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena copulata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena cordata <small>Schaufuss, 1883</small><span style="color:gray">^{i c g}</span>
• Hydraena cordiformis <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena cordispina <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena corinna <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena cornelli <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena corrugis <small>Orchymont, 1934</small><span style="color:gray">^{i c g}</span>
• Hydraena coryleti <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena costiniceps <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena crepidoptera <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena cristatigena <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena croatica <small>Kuwert, 1888</small><span style="color:gray">^{i c g}</span>
• Hydraena cryptostoma <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena crystallina <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena cubista <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena cultrata <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena cunicula <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena cunninghamensis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena curta <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena curtipalpis <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena curvipes <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena curvosa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena cuspidicollis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena cyclops <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena cygnus <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena czernohorskyi <small>Müller, 1911</small><span style="color:gray">^{i c g}</span>
• Hydraena dalmatina <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena damascena <small>Pic, 1910</small><span style="color:gray">^{i c g}</span>
• Hydraena dariensis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena darwini <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena d-concava <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena d-destina <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena debeckeri <small>(Janssens, 1972)</small><span style="color:gray">^{i c g}</span>
• Hydraena decepta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena decipiens <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena decolor <small>Sainte-Claire Deville, 1903</small><span style="color:gray">^{i c g}</span>
• Hydraena decui <small>Spangler, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena delia <small>Balfour-Browne, 1978</small><span style="color:gray">^{i c g}</span>
• Hydraena deliquesca <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena delvasi <small>Delgado and Collantes, 1996</small><span style="color:gray">^{i c g}</span>
• Hydraena densa <small>Fauvel, 1883</small><span style="color:gray">^{i c g}</span>
• Hydraena dentipalpis <small>Reitter, 1888</small><span style="color:gray">^{i c g}</span>
• Hydraena dentipes <small>Germar, 1824</small><span style="color:gray">^{i c g}</span>
• Hydraena devillei <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena devincta <small>Orchymont, 1940</small><span style="color:gray">^{i c g}</span>
• Hydraena diadema <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena diazi <small>Trizzino, Jäch and Ribera in Trizzino, Jäch, Audisio and Rivera, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena diffusa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena dilutipes <small>Fairmaire, 1898</small><span style="color:gray">^{i c g}</span>
• Hydraena dimorpha <small>Orchymont, 1922</small><span style="color:gray">^{i c g}</span>
• Hydraena dinarica <small>Freitag & de Vries, 2021</small><span style="color:gray">^{i c g}</span>
• Hydraena dinosaurophila <small>Jäch, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena discicollis <small>Fairmaire, 1898</small><span style="color:gray">^{i c g}</span>
• Hydraena discreta <small>Ganglbauer, 1904</small><span style="color:gray">^{i c g}</span>
• Hydraena disparamera <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena dochula <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena dolichogaster <small>Janssens, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena dorrigoensis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena draconisaurati <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena dudgeoni <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena duodecimata <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena duohamata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ebriimadli <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena ecuadormica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena egoni <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena eichleri <small>Orchymont, 1937</small><span style="color:gray">^{i c g}</span>
• Hydraena einsteini <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena elephanta <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena elisabethae <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena eliya <small>Jäch, 1982</small><span style="color:gray">^{i c g}</span>
• Hydraena emarginata <small>Rey, 1885</small><span style="color:gray">^{i c g}</span>
• Hydraena emineae <small>Jäch and Kasapoglu, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena epeirosi <small>Ferro, 1985</small><span style="color:gray">^{i c g}</span>
• Hydraena errina <small>Orchymont, 1948</small><span style="color:gray">^{i c g}</span>
• Hydraena erythraea <small>Régimbart, 1905</small><span style="color:gray">^{i c g}</span>
• Hydraena eryx <small>Orchymont, 1948</small><span style="color:gray">^{i c g}</span>
• Hydraena esquinita <small>Brojer and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena essentia <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena eucnemis <small>Janssens, 1970</small><span style="color:gray">^{i c g}</span>
• Hydraena evanescens <small>Rey, 1884</small><span style="color:gray">^{i c g}</span>
• Hydraena evansi <small>Balfour-Browne, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena exarata <small>Kiesenwetter, 1866</small><span style="color:gray">^{i c g}</span>
• Hydraena exasperata <small>Orchymont, 1935</small><span style="color:gray">^{i c g}</span>
• Hydraena excisa <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena exhalista <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena exilipes <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena expedita <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena explanata <small>Pic, 1905</small><span style="color:gray">^{i c g}</span>
• Hydraena extorris <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena falcata <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena farsensis <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fasciata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fascinata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fasciola <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fasciolata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fasciopaca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena favulosa <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena fenestella <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ferethula <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena feryi <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena feuerborni <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena fijiensis <small>Balfour-Browne, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena filum <small>Sahlberg, 1908</small><span style="color:gray">^{i c g}</span>
• Hydraena finita <small>Orchymont, 1943</small><span style="color:gray">^{i c g}</span>
• Hydraena finki <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena finniganensis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena fiorii <small>Porta, 1899</small><span style="color:gray">^{i c g}</span>
• Hydraena fischeri <small>Schönmann, 1991</small><span style="color:gray">^{i c g}</span>
• Hydraena flagella <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fluvicola <small>(Perkins, 1980)</small><span style="color:gray">^{i c g}</span>
• Hydraena foliobba <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fontana <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena fontiscarsavii <small>(Jäch, 1988)</small><span style="color:gray">^{i c g}</span>
• Hydraena formosapala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena formula <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena forticollis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena fosterorum <small>Trizzino, Jäch and Ribera in Trizzino, Jäch, Audisio and Rivera, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena franklyni <small>Deler-Hernández and Delgado, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena freitagi <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena frenzeli <small>Skale and Jäch, 2008</small><span style="color:gray">^{i c g}</span>
• Hydraena fritzi <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena frondsicola <small>(Perkins, 1980)</small><span style="color:gray">^{i c g}</span>
• Hydraena funda <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fundacta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fundaequalis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena fundapta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fundarca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena fundata <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena fundextra <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena furthi <small>Jäch, 1982</small><span style="color:gray">^{i c g}</span>
• Hydraena gaditana <small>Lagar and Fresneda, 1990</small><span style="color:gray">^{i c g}</span>
• Hydraena galatica <small>Janssens, 1970</small><span style="color:gray">^{i c g}</span>
• Hydraena galea <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena gavarrensis <small>Jäch, Díaz and Martinoy, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena geminya <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena genumorpha <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena georgiadesi <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena geraldneuhauseri <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena germaini <small>Orchymont, 1923</small><span style="color:gray">^{i c g}</span>
• Hydraena glassmani <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena gnatella <small>Orchymont, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena gnatelloides <small>Orchymont, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena gracilidelphis <small>Trizzino, Valladares, Garrido and Audisio, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena gracilis <small>Germar, 1824</small><span style="color:gray">^{i c g}</span>
• Hydraena graciloides <small>(Jäch, 1988)</small><span style="color:gray">^{i c g}</span>
• Hydraena grandis <small>Reitter, 1885</small><span style="color:gray">^{i c g}</span>
• Hydraena graphica <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena grata <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena gregalis <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena gressa <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena griphus <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena grouvellei <small>Orchymont, 1923</small><span style="color:gray">^{i c g}</span>
• Hydraena grueberi <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena guadelupensis <small>Orchymont, 1923</small><span style="color:gray">^{i c g}</span>
• Hydraena guangxiensis <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena guatemala <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena guentheri <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena guilin <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena gynaephila <small>Jäch, 1997</small><span style="color:gray">^{i c g}</span>
• Hydraena habitiva <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena hainzi <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena haitensis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena hajeki <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena hamifera <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena hansreuteri <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena hayashii <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena helena <small>Orchymont, 1929</small><span style="color:gray">^{i c g}</span>
• Hydraena hendrichi <small>Jäch, Díaz and Skale, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena hernandoi <small>Fresneda and Lagar, 1990</small><span style="color:gray">^{i c g}</span>
• Hydraena herzogestella <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena heterogyna <small>Bedel, 1898</small><span style="color:gray">^{i c g}</span>
• Hydraena hiekei <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena hillaryi <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena hintoni <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena hispanica <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena holdhausi <small>Pretner, 1929</small><span style="color:gray">^{i c g}</span>
• Hydraena hornabrooki <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena hortensis <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena hosiwergi <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena hosseinieorum <small>Bilton and Jäch, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena huangshanensis <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena huitongensis <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena humanica <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena hunanensis <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena hungarica <small>Rey, 1884</small><span style="color:gray">^{i c g}</span>
• Hydraena huonica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena hyalina <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena hynesi <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena hypipamee <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena ibalimi <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena iberica <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena idema <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena iheya <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena ilamensis <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena ilica <small>Jäch, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena imbria <small>Jäch and Díaz, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena impala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena imperatrix <small>Kniz, 1919</small><span style="color:gray">^{i c g}</span>
• Hydraena impercepta <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena impressicollis <small>Fairmaire, 1898</small><span style="color:gray">^{i c g}</span>
• Hydraena inancala <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena inapicipalpis <small>Pic, 1918</small><span style="color:gray">^{i c g}</span>
• Hydraena incisiva <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena incista <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena incurva <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena indiana <small>Jäch, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena indica <small>Orchymont, 1920</small><span style="color:gray">^{i c g}</span>
• Hydraena infoveola <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ingens <small>(Perkins, 1980)</small><span style="color:gray">^{i c g}</span>
• Hydraena inhalista <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena injectiva <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena innuda <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena inopinata <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena inplacopaca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena insandalia <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena insita <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena insolita <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena insularis <small>Orchymont, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena integra <small>Pretner, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena intensa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena intermedia <small>Rosenhauer, 1847</small><span style="color:gray">^{i c g}</span>
• Hydraena intraangulata <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena inusta <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena invicta <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena iriomotensis <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena isabelae <small>Castro and Herrera, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena isolinae <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena ispirensis <small>Kasapoglu, Jäch and Skale, 2010</small><span style="color:gray">^{i c g}</span>
• Hydraena iterata <small>Orchymont, 1948</small><span style="color:gray">^{i c g}</span>
• Hydraena jacobsoni <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena jaechiana <small>(Audisio and De Biase, 1990)</small><span style="color:gray">^{i c g}</span>
• Hydraena jaegeri <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena jailensis <small>Breit, 1917</small><span style="color:gray">^{i c g}</span>
• Hydraena janczyki <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena janeceki <small>Jäch, 1987</small><span style="color:gray">^{i c g}</span>
• Hydraena janssensi <small>Nilsson, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena jengi <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena jilanzhui <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena jivaro <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena johncoltranei <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena jubilata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena kadowakii <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena kakadu <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena kamitei <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena karinkukolae <small>Jäch, 1989</small><span style="color:gray">^{i c g}</span>
• Hydraena karmai <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena kasyi <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena kaufmanni <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena kellymilleri <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena khnzoriani <small>Janssens, 1968</small><span style="color:gray">^{i c g}</span>
• Hydraena kilimandjarensis <small>Régimbart, 1906</small><span style="color:gray">^{i c g}</span>
• Hydraena kitayamai <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena knischi <small>Orchymont, 1928</small><span style="color:gray">^{i c g}</span>
• Hydraena kocheri <small>Berthélemy, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena kodadai <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena koje <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena koma <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena krasnodarensis <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena kroumiriana <small>Kaddouri, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena kucinici <small>Micetic Stankovic and Jäch, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena kuehnelti <small>Jäch, 1989</small><span style="color:gray">^{i c g}</span>
• Hydraena kurdistanica <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena kwangsiensis <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena labropaca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena lagamba <small>Brojer and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena lapidicola <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena lapissectilis <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena larissae <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena larsoni <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena lascrucensis <small>Brojer and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena lassulipes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena latebricola <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena latisoror <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena lazica <small>Janssens, 1963</small><span style="color:gray">^{i c g}</span>
• Hydraena leechi <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena leei <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena legorskyi <small>Jäch and Brojer, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena lehmanni <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena leonhardi <small>Breit, 1916</small><span style="color:gray">^{i c g}</span>
• Hydraena leprieuri <small>Sainte-Claire Deville, 1905</small><span style="color:gray">^{i c g}</span>
• Hydraena levantina <small>Sahlberg, 1908</small><span style="color:gray">^{i c g}</span>
• Hydraena ligulipes <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena lilianae <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena limbobesa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena limpidicollis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena liriope <small>Orchymont, 1943</small><span style="color:gray">^{i c g}</span>
• Hydraena longicollis <small>Sharp, 1882</small><span style="color:gray">^{i c g}</span>
• Hydraena loripes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena lotti <small>Bilton, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena lucasi <small>Lagar, 1984</small><span style="color:gray">^{i c g}</span>
• Hydraena lucernae <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena ludovicae <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena luminicollis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena luridipennis <small>MacLeay, 1873</small><span style="color:gray">^{i c g}</span>
• Hydraena lusitana <small>(Berthélemy in Berthélemy and Whytton Da Terra, 1977)</small><span style="color:gray">^{i c g}</span>
• Hydraena lycia <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena macedonica <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena maculicollis <small>Champion, 1920</small><span style="color:gray">^{i c g}</span>
• Hydraena maculopala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena madronensis <small>Castor, García and Ferreras, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena magna <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena magnessa <small>Jäch, 1997</small><span style="color:gray">^{i c g}</span>
• Hydraena magnetica <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena mahensis <small>Scott, 1913</small><span style="color:gray">^{i c g}</span>
• Hydraena malagricola <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena malickyi <small>Jäch, 1989</small><span style="color:gray">^{i c g}</span>
• Hydraena malkini <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena manabica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena manaslu <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena manfredjaechi <small>Delgado and Soler, 1991</small><span style="color:gray">^{i c g}</span>
• Hydraena manguao <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena manulea <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena manuloides <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena marawaka <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena marcosae <small>Aguilera, Hernando and Ribera, 1997</small><span style="color:gray">^{i c g}</span>
• Hydraena marginicollis <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena mariannae <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena marinae <small>Castro, 2003</small><span style="color:gray">^{i c g}</span>
• Hydraena martensi <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena martinschoepfi <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena masatakai <small>Jäch and Díaz, 2003</small><span style="color:gray">^{i c g}</span>
• Hydraena maureenae <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena mauriciogarciai <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena mazamitla <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena mecai <small>Millán and Aguilera, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena melas <small>Dalla Torre, 1877</small><span style="color:gray">^{i c g}</span>
• Hydraena mercuriala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena meschniggi <small>Pretner, 1929</small><span style="color:gray">^{i c g}</span>
• Hydraena metzeni <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena mexicana <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena mianminica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena michaelbalkei <small>Jäch, Díaz and Skale, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena mignymixys <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena millerorum <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena miniretia <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena mintrita <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena mitchellensis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena miyatakei <small>Satô, 1959</small><span style="color:gray">^{i c g}</span>
• Hydraena modili <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena monikae <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena monscassius <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena monstruosipes <small>Ferro, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena monteithi <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena morio <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena motzfeldi <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena mouzaiensis <small>Sainte-Claire Deville, 1909</small><span style="color:gray">^{i c g}</span>
• Hydraena mpumalanga <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena muelleri <small>Pretner, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena muezziginea <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena multiloba <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena multimurata <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena multispina <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena mylasae <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena namibiensis <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena nanocolorata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena nanopala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena nanoscintilla <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena natiforma <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena neblina <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena nelsonmandelai <small>Makhan, 2008</small><span style="color:gray">^{i c g}</span>
• Hydraena neoaccurata <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena nevermanni <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena newtoni <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena nielshaggei <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena nigra <small>Hatch, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena nigrita <small>Germar, 1824</small><span style="color:gray">^{i c g}</span>
• Hydraena nike <small>Jäch, 1995</small><span style="color:gray">^{i c g}</span>
• Hydraena nilguenae <small>(Jäch, 1988)</small><span style="color:gray">^{i c g}</span>
• Hydraena nitidimenta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena nivalis <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena nomenipes <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena notsui <small>Satô, 1978</small><span style="color:gray">^{i c g}</span>
• Hydraena novacula <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena numidica <small>Sainte-Claire Deville, 1905</small><span style="color:gray">^{i c g}</span>
• Hydraena nurabadensis <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena nuratauensis <small>Jäch, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena oaxaca <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena oblio <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena occidentalis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena occitana <small>(Audisio and De Biase, 1995)</small><span style="color:gray">^{i c g}</span>
• Hydraena okapa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena okinawensis <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena olidipastoris <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena ollopa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena optica <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena orchis <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena orcula <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena ordishi <small>Delgado and Palma, 1997</small><span style="color:gray">^{i c g}</span>
• Hydraena orientalis <small>Breit, 1916</small><span style="color:gray">^{i c g}</span>
• Hydraena ortali <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena orthosia <small>Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena otiarca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ovata <small>Janssens, 1961</small><span style="color:gray">^{i c g}</span>
• Hydraena owenobesa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena oxiana <small>Janssens, 1974</small><span style="color:gray">^{i c g}</span>
• Hydraena ozarkensis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena pachyptera <small>Apfelbeck, 1909</small><span style="color:gray">^{i c g}</span>
• Hydraena pacifica <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena pacificica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena paeminosa <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena pagaluensis <small>Hernando and Ribera, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena paganettii <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena pajarita <small>Brojer and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pakistanica <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena pala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena palamita <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena palawanensis <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena pallidula <small>Sainte-Claire Deville, 1909</small><span style="color:gray">^{i c g}</span>
• Hydraena palustris <small>Erichson, 1837</small><span style="color:gray">^{i c g}</span>
• Hydraena pamirica <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena pamphylia <small>Jäch and Díaz, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena pangaei <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena pantanalensis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena paraguayensis <small>Janssens, 1972</small><span style="color:gray">^{i c g}</span>
• Hydraena parciplumea <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena particeps <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena parva <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena parysatis <small>Janssens, 1981</small><span style="color:gray">^{i c g}</span>
• Hydraena paucistriata <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena paulmoritz <small>Jäch, Díaz and Skale, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena pavicula <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena paxillipes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena peckorum <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pectenata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pedroaguilerai <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pegopyga <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pelops <small>Jäch, 1995</small><span style="color:gray">^{i c g}</span>
• Hydraena pennsylvanica <small>Kiesenwetter, 1849</small><span style="color:gray">^b</span>
• Hydraena pensylvanica <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena penultimata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena perkinsi <small>Spangler, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena perlonga <small>Balfour-Browne, 1950</small><span style="color:gray">^{i c g}</span>
• Hydraena perpunctata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena persica <small>Janssens, 1981</small><span style="color:gray">^{i c g}</span>
• Hydraena pertransversa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena peru <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena pesici <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena petila <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena phainops <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena phallerata <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena phallica <small>Orchymont, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena phassilyi <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena philippi <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena philyra <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena phoenicia <small>Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena photogenica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pici <small>Sainte-Claire Deville, 1905</small><span style="color:gray">^{i c g}</span>
• Hydraena picula <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pilimera <small>Brojer and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pilipes <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena pilulambra <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena pindica <small>Janssens, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena pisciforma <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena planata <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena plastica <small>Orchymont, 1943</small><span style="color:gray">^{i c g}</span>
• Hydraena platycnemis <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena platynaspis <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena platysoma <small>Janssens, 1968</small><span style="color:gray">^{i c g}</span>
• Hydraena plaumanni <small>Orchymont, 1937</small><span style="color:gray">^{i c g}</span>
• Hydraena plumipes <small>Rey, 1886</small><span style="color:gray">^{i c g}</span>
• Hydraena pluralticola <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena plurifurcata <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena polita <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena pontequula <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena pontica <small>Janssens, 1963</small><span style="color:gray">^{i c g}</span>
• Hydraena porchi <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena porcula <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena praetermissa <small>Jäch, 1987</small><span style="color:gray">^{i c g}</span>
• Hydraena premordica <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena pretneri <small>Chiesa, 1927</small><span style="color:gray">^{i c g}</span>
• Hydraena prieto <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena princeps <small>Fauvel, 1903</small><span style="color:gray">^{i c g}</span>
• Hydraena processa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena producta <small>Mulsant and Rey, 1852</small><span style="color:gray">^{i c g}</span>
• Hydraena proesei <small>Skale and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena profunda <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena prokini <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena propria <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena prusensis <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena pseudocirrata <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena pseudopalawanensis <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena pseudoriparia <small>Orchymont, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena puetzi <small>Jäch, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena pugillista <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena pulchella <small>Germar, 1824</small><span style="color:gray">^{i c g}</span>
• Hydraena pulsatrix <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena punctata <small>LeConte, 1855</small><span style="color:gray">^{i c g}</span>
• Hydraena puncticollis <small>Sharp, 1882</small><span style="color:gray">^{i c g}</span>
• Hydraena punctilata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena putearius <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena pygmaea <small>Waterhouse, 1833</small><span style="color:gray">^{i c g}</span>
• Hydraena quadrata <small>(Janssens, 1980)</small><span style="color:gray">^{i c g}</span>
• Hydraena quadricollis <small>Wollaston, 1864</small><span style="color:gray">^{i c g}</span>
• Hydraena quadricurvipes <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena quadriplumipes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena quechua <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena queenslandica <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena quetiae <small>Castro, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena quilisi <small>Lagar, Fresneda and Fernando, 1987</small><span style="color:gray">^{i c g}</span>
• Hydraena quintana <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ramuensis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena ramuquintana <small>Perez, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena receptiva <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena reflectiva <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena regimbarti <small>Zaitzev, 1908</small><span style="color:gray">^{i c g}</span>
• Hydraena remulipes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena reticulata <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena reticuloides <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena reticulositis <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena revelovela <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena reverberata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena reyi <small>Kuwert, 1888</small><span style="color:gray">^{i c g}</span>
• Hydraena rhinoceros <small>(Janssens, 1972)</small><span style="color:gray">^{i c g}</span>
• Hydraena rhodia <small>Jäch, 1985</small><span style="color:gray">^{i c g}</span>
• Hydraena riberai <small>Jäch, Aguilera and Hernando, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena richardimbi <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena rigua <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena ripaeaureae <small>(Janssens, 1972)</small><span style="color:gray">^{i c g}</span>
• Hydraena riparia <small>Kugelann, 1794</small><span style="color:gray">^{i c g}</span>
• Hydraena rivularis <small>Guillebeau, 1896</small><span style="color:gray">^{i c g}</span>
• Hydraena robusta <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena rosannae <small>Audisio, Trizzino and De Biase in Audisio, Trizzino, De Biase, Mancini and Antonini, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena rudallensis <small>Blackburn, 1896</small><span style="color:gray">^{i c g}</span>
• Hydraena rufipennis <small>Boscá Berga, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena rufipes <small>Curtis, 1830</small><span style="color:gray">^{i c g}</span>
• Hydraena rugosa <small>Mulsant, 1844</small><span style="color:gray">^{i c g}</span>
• Hydraena ruinosa <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena rukiyeae <small>Kasapoglu, Jäch and Skale, 2010</small><span style="color:gray">^{i c g}</span>
• Hydraena sabella <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena saga <small>Orchymont, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena sagatai <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena sahlbergi <small>Orchymont, 1923</small><span style="color:gray">^{i c g}</span>
• Hydraena saluta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena samia <small>Jäch, 1986</small><span style="color:gray">^{i c g}</span>
• Hydraena samnitica <small>Knisch, 1924</small><span style="color:gray">^{i c g}</span>
• Hydraena sanagergelyae <small>Brojer and Jäch, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena sanfilippoi <small>(Audisio and De Biase, 1995)</small><span style="color:gray">^{i c g}</span>
• Hydraena sappho <small>Janssens, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena sardoa <small>Binaghi, 1961</small><span style="color:gray">^{i c g}</span>
• Hydraena satoi <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena sautakei <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena sauteri <small>Orchymont, 1913</small><span style="color:gray">^{i c g}</span>
• Hydraena scabra <small>Orchymont, 1925</small><span style="color:gray">^{i c g}</span>
• Hydraena scabrosa <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena schawalleri <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena schilfii <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena schillhammeri <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena schmidi <small>Jäch and Díaz, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena schoedli <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena schoenmanni <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena schubertorum <small>Jäch and Díaz, 2001</small><span style="color:gray">^{i c g}</span>
• Hydraena schuelkei <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena schuleri <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena scintilla <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena scintillabella <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena scintillamima <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena scintillapicta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena scintillarca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena scintillutea <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena scitula <small>Orchymont, 1943</small><span style="color:gray">^{i c g}</span>
• Hydraena scolops <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena scopula <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena scythica <small>Janssens, 1974</small><span style="color:gray">^{i c g}</span>
• Hydraena sebastiani <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena sepikramuensis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena septemlacuum <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena serpentina <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena serricollis <small>Wollaston, 1864</small><span style="color:gray">^{i c g}</span>
• Hydraena servilia <small>Orchymont, 1936</small><span style="color:gray">^{i c g}</span>
• Hydraena sexarcuata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena sexsuprema <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena sharmai <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena sharpi <small>Rey, 1886</small><span style="color:gray">^{i c g}</span>
• Hydraena shorti <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena sicula <small>Kiesenwetter, 1849</small><span style="color:gray">^{i c g}</span>
• Hydraena sidon <small>Jäch, Díaz and Dia in Jäch, Dia and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena sierra <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena similis <small>Orchymont, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena simonidea <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena simplicicollis <small>Blackburn, 1896</small><span style="color:gray">^{i c g}</span>
• Hydraena simplipes <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena singaporensis <small>Jäch, Díaz and Skale, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena sinope <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena smyrnensis <small>Sahlberg, 1908</small><span style="color:gray">^{i c g}</span>
• Hydraena socius <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena solarii <small>Pretner, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena solodovnikovi <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena sordida <small>Sharp, 1882</small><span style="color:gray">^{i c g}</span>
• Hydraena spangleri <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena spatula <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena speciosa <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena spinipes <small>Baudi, 1882</small><span style="color:gray">^{i c g}</span>
• Hydraena spinissima <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena spinobesa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena splecoma <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena squalida <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena stefani <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena steineri <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena stellula <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena storeyi <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena striolata <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena stussineri <small>Kuwert, 1888</small><span style="color:gray">^{i c g}</span>
• Hydraena subacuminata <small>Rey, 1884</small><span style="color:gray">^{i c g}</span>
• Hydraena subgrandis <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena subimpressa <small>Rey, 1885</small><span style="color:gray">^{i c g}</span>
• Hydraena subina <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena subinflata <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena subinoides <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena subintegra <small>Ganglbauer, 1901</small><span style="color:gray">^{i c g}</span>
• Hydraena subinura <small>Orchymont, 1944</small><span style="color:gray">^{i c g}</span>
• Hydraena subirregularis <small>Pic, 1918</small><span style="color:gray">^{i c g}</span>
• Hydraena subjuncta <small>Orchymont, 1930</small><span style="color:gray">^{i c g}</span>
• Hydraena sublamina <small>Orchymont, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena sublapsa <small>Orchymont, 1945</small><span style="color:gray">^{i c g}</span>
• Hydraena subsequens <small>Rey, 1886</small><span style="color:gray">^{i c g}</span>
• Hydraena supersexa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena supina <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena szechuanensis <small>Pu, 1951</small><span style="color:gray">^{i c g}</span>
• Hydraena takin <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena takutu <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tarsotricha <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tarvisina <small>(Ferro, 1992)</small><span style="color:gray">^{i c g}</span>
• Hydraena tatii <small>Sáinz-Cantero and Alba-Tercedor, 1989</small><span style="color:gray">^{i c g}</span>
• Hydraena tauricola <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena taxila <small>Janssens, 1962</small><span style="color:gray">^{i c g}</span>
• Hydraena tekmanensis <small>Jäch, Skale and Kasapoglu, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tenjikuana <small>Satô, 1979</small><span style="color:gray">^{i c g}</span>
• Hydraena tenuis <small>(Janssens, 1980)</small><span style="color:gray">^{i c g}</span>
• Hydraena tenuisella <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena tenuisoror <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena terebrans <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena terralta <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena testacea <small>Curtis, 1830</small><span style="color:gray">^{i c g}</span>
• Hydraena tetana <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena textila <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena thienemanni <small>Orchymont, 1932</small><span style="color:gray">^{i c g}</span>
• Hydraena thola <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tholasoris <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena thumbelina <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena thumbelipes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena thyene <small>Balfour-Browne, 1958</small><span style="color:gray">^{i c g}</span>
• Hydraena tiara <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena tibiopaca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tobogan <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena torosopala <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena torricellica <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena transvallis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena trapezoidalis <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena tricantha <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena trichotarsa <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tricosipes <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tridigita <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tridisca <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena triloba <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena trinidensis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena triparamera <small>Jäch, 1982</small><span style="color:gray">^{i c g}</span>
• Hydraena tritropis <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena tritutela <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena truncata <small>Rey, 1885</small><span style="color:gray">^{i c g}</span>
• Hydraena tsushimaensis <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena tubuliphallis <small>Jäch, 1982</small><span style="color:gray">^{i c g}</span>
• Hydraena tucumanica <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena tuolumne <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena turcica <small>Janssens, 1965</small><span style="color:gray">^{i c g}</span>
• Hydraena turrialba <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena tyrrhena <small>Binaghi, 1961</small><span style="color:gray">^{i c g}</span>
• Hydraena ulna <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena umbolenta <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena unca <small>Valladares, 1989</small><span style="color:gray">^{i c g}</span>
• Hydraena undevigintioctogintasisyphos <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena undulata <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena uniforma <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena unita <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena uzbekistanica <small>Jäch, 1994</small><span style="color:gray">^{i c g}</span>
• Hydraena vadosa <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena valentini <small>Jäch and Díaz, 2012</small><span style="color:gray">^{i c g}</span>
• Hydraena vandykei <small>Orchymont, 1923</small><span style="color:gray">^{i c g}</span>
• Hydraena variopaca <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena vedrasi <small>Orchymont, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena vela <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena velvetina <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena venezuela <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena verberans <small>Jäch and Díaz, 2006</small><span style="color:gray">^{i c g}</span>
• Hydraena verstraeteni <small>Ferro, 1984</small><span style="color:gray">^{i c g}</span>
• Hydraena victoriae <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena vietnamensis <small>(Janssens, 1972)</small><span style="color:gray">^{i c g}</span>
• Hydraena virginalis <small>Janssens, 1963</small><span style="color:gray">^{i c g}</span>
• Hydraena vodozi <small>Sainte-Claire Deville, 1908</small><span style="color:gray">^{i c g}</span>
• Hydraena vulgaris <small>Jäch and Díaz, 2000</small><span style="color:gray">^{i c g}</span>
• Hydraena waldheimi <small>Jäch, 1987</small><span style="color:gray">^{i c g}</span>
• Hydraena wangi <small>Jäch and Díaz, 1998</small><span style="color:gray">^{i c g}</span>
• Hydraena wangmiaoi <small>Jäch and Díaz, 2005</small><span style="color:gray">^{i c g}</span>
• Hydraena watanabei <small>Jäch and Satô, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena wattsi <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena weigeli <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena weiri <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena wencke <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena wewalkai <small>Jäch, 1988</small><span style="color:gray">^{i c g}</span>
• Hydraena williamsensis <small>Deane, 1931</small><span style="color:gray">^{i c g}</span>
• Hydraena wittmeri <small>Satô, 1979</small><span style="color:gray">^{i c g}</span>
• Hydraena wolfi <small>Skale and Jäch in Jäch and Skale, 2009</small><span style="color:gray">^{i c g}</span>
• Hydraena wrasei <small>Jäch, 1992</small><span style="color:gray">^{i c g}</span>
• Hydraena xingu <small>Perkins, 2011</small><span style="color:gray">^{i c g}</span>
• Hydraena yangae <small>Jäch, Díaz and Skale, 2013</small><span style="color:gray">^{i c g}</span>
• Hydraena yonaguniensis <small>Jäch and Díaz, 2003</small><span style="color:gray">^{i c g}</span>
• Hydraena yosemitensis <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena yoshitomii <small>Jäch and Díaz, 1999</small><span style="color:gray">^{i c g}</span>
• Hydraena youngi <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena ypsilon <small>Zwick, 1977</small><span style="color:gray">^{i c g}</span>
• Hydraena yunnanensis <small>Pu, 1942</small><span style="color:gray">^{i c g}</span>
• Hydraena zapatina <small>Perkins, 1980</small><span style="color:gray">^{i c g}</span>
• Hydraena zelandica <small>Ordish, 1984</small><span style="color:gray">^{i c g}</span>
• Hydraena zetteli <small>Freitag and Jäch, 2007</small><span style="color:gray">^{i c g}</span>
• Hydraena zezerensis <small>Díaz Pazos and Bilton, 1995</small><span style="color:gray">^{i c g}</span>
• Hydraena zimbabwensis <small>Perkins, 2014</small><span style="color:gray">^{i c g}</span>
• Hydraena zwicki <small>Perkins, 2007</small><span style="color:gray">^{i c g}</span>

<small>Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net</small>

References

Further reading

External links