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Assiminea

Assiminea is a genus of minute, salt-tolerant snails with an operculum, aquatic gastropod mollusks, or micromollusks, in the family Assimineidae.

Distribution and habitat

These snails can be found worldwide. They live usually in brackish water between tide-marks on the mud of estuaries and salt marshes of tropical and temperate regions, at beaches, in water and at land. But species are to be found both in perfectly salt and in perfectly fresh water.

Description

These are very small to medium large snails, between 2 and 13 mm. Some adults do not exceed a size of 3 mm. Some related genera, such as Paludinella, are so remarkably similar in shell form that they are often confused.

The shape of the thin shells is somewhat ovately conical. The margin of the aperture is simple. The operculum is in most cases horny. The eyes are at the end of short, stout stalks. They feed on vegetable detritus and small algae. They lay their eggs in the mud, and hatch as free-swimming larvae.

Species

According to the World Register of Marine Species, the following species with valid names are included within the genus Assiminea :

The Indo-Pacific Molluscan Database also includes the following species with names in current use :

The database ITIS also mentions the following species :

Synonyms

  • Assiminea affinis <small>Böttger, 1887</small>: synonym of Taiwanassiminea affinis <small>(Böttger, 1887)</small>
  • Assiminea affinis <small>Mousson, 1874</small>: synonym of Cryptassiminea buccinoides <small>(Quoy & Gaimard, 1834)</small>
  • Assiminea andrewsiana <small>E. A. Smith, 1900</small>: synonym of Angustassiminea andrewsiana <small>(E. A. Smith, 1900)</small> (original combination)
  • Assiminea angustata <small>Pilsbry, 1901</small>: synonym of Ansola angustata <small>(Pilsbry, 1901)</small>
  • Assiminea antipodum <small>Filhol, 1880</small> : synonym of Laevilitorina antipodum <small>(Filhol, 1880)</small>
  • Assiminea australis <small>Petterd, 1889</small>: synonym of Cryptassiminea buccinoides <small>(Quoy & Gaimard, 1834)</small>
  • Assiminea australis <small>Thiele, 1927</small>: synonym of Assiminea brevicula <small>(Pfeiffer, 1855)</small>
  • Assiminea bedaliensis <small>Rensch, 1934</small>: synonym of Taiwanassiminea bedaliensis <small>(Rensch, 1934)</small>
  • Assiminea beddomiana <small>Nevill, 1881</small>: synonym of Assiminea beddomeana <small>G. Nevill, 1880</small> synonym of Austropilula beddomeana <small>(G. Nevill, 1880)</small> (misspelling)
  • Assiminea bella <small>Kuroda, 1958</small>: synonym of Assiminea hiradoensis <small>T. Habe, 1942</small>
  • Assiminea bicincta <small>Petterd, 1889</small>: synonym of Cryptassiminea buccinoides <small>(Quoy & Gaimard, 1834)</small>
  • Assiminea bifasciata <small>Nevill, 1880</small>: synonym of Assiminea ovata <small>(Krauss, 1848)</small>
  • Assiminea brevicula <small>(Pfeiffer, 1854)</small>: synonym of Optediceros breviculum <small>(Pfeiffer, 1855)</small>
  • Assiminea buccinoides <small>(Quoy and Gaimard, 1834)</small>: synonym of Cryptassiminea buccinoides <small>(Quoy & Gaimard, 1834)</small>
  • Assiminea caledonica <small>(Crosse, 1869)</small>: synonym of Crossilla caledonica <small>(Crosse, 1869)</small>
  • Assiminea californica <small>(Tryon, 1865)</small>: California assiminea : synonym of Angustassiminea californica <small>(Tryon, 1865)</small>
  • Assiminea capensis <small>Bartsch, 1915</small>: synonym of Assiminea ovata <small>(Krauss, 1848)</small>
  • Assiminea carinata <small>I. Lea, 1856</small>: synonym of Cyclotropis carinata <small>(I. Lea, 1856)</small> (original combination)
  • Assiminea castanea <small>Westerlund, 1883</small>: synonym of Angustassiminea castanea <small>(Westerlund, 1883)</small>
  • † Assiminea conoidea <small>von Koenen, 1882</small> : synonym of † Peringia conoidea <small>(von Koenen, 1882)</small> (new combination)
  • † Assiminea contracta <small>Cossmann, 1888</small> : synonym of † Peringia contracta <small>(Cossmann, 1888)</small> (new combination)
  • Assiminea corpulenta <small>van Benthem Jutting, 1963</small>: synonym of Paludinella corpulenta <small>(van Benthem Jutting, 1963)</small> (original combination)
  • † Assiminea crassa <small>Etheridge, 1879</small>: synonym of † Littoridina crassa <small>(Etheridge, 1879)</small> (new combination)
  • Assiminea creutzbergi <small>De Jong & Coomans, 1988</small>: synonym of Barleeia creutzbergi <small>(De Jong & Coomans, 1988)</small>
  • † Assiminea distinguenda <small>Cossmann, 1899</small>: synonym of † Peringia distinguenda <small>(Cossmann, 1899)</small> (new combination)
  • Assiminea dohrniana <small>G. Nevill, 1880</small>: synonym of Ovassiminea dohrniana <small>(G. Nevill, 1880)</small> (original combination)
  • † Assiminea eburnoides <small>Cossmann, 1888</small>: synonym of † Emmericia eburnoides <small>(Cossmann, 1888)</small> (new combination)
  • † Assiminea elatior <small>Cossmann, 1907</small>: synonym of † Lapparentia elatior <small>(Cossmann, 1907)</small> (new combination)
  • Assiminea gerhardtae <small>De Jong & Coomans, 1988</small>: synonym of Caelatura gerhardtae <small>(De Jong & Coomans, 1988)</small>
  • † Assiminea gottscheana <small>von Koenen, 1882</small>: synonym of † Peringia gottscheana <small>(von Koenen, 1882)</small> (new combination)
  • Assiminea granum <small>Morelet, 1882</small>: synonym of Paludinella hidalgoi f. granum <small>(Morelet, 1882)</small> (original combination)
  • Assiminea hayasii <small>Habe, 1942</small>: synonym of Taiwanassiminea hayasii <small>(Habe, 1942)</small>
  • Assiminea hidalgoi <small>(Gassies, 1869)</small>: synonym of Paludinella hidalgoi <small>(Gassies, 1869)</small> (superseded combination)
  • Assiminea infima <small>Berry, 1947</small> (badwater snail): synonym of Angustassiminea infima <small>(S. S. Berry, 1947)</small> (original combination)
  • Assiminea knysnaensis <small>(F. Krauss, 1848)</small>: synonym of Hydrobia knysnaensis <small>(Krauss, 1848)</small> (superseded combination)
  • Assiminea kushimotoensis <small>Kuroda, 1958</small>: synonym of Angustassiminea castanea <small>(Westerlund, 1883)</small>
  • Assiminea latericea <small>H. Adams & A. Adams, 1864</small>: synonym of Pseudomphala latericea <small>(H. Adams & A. Adams, 1864)</small> (original combination)
  • Assiminea lentula <small>van Benthem Jutting, 1963</small>: synonym of Taiwanassiminea lentula <small>(van Benthem Jutting, 1963)</small>
  • Assiminea leptodonta <small>Connolly, 1922</small>: synonym of Eussoia leptodonta <small>(Connolly, 1922)</small> (correction of original combination)
  • Assiminea lirata <small>Turton, 1932</small>: synonym of Tomichia tristis <small>(Morelet, 1889)</small> (junior synonym)
  • Assiminea littorina (<small>Delle Chiaje, 1828) sensu Philippi, 1841</small>: synonym of Paludinella globularis <small>(Hanley in Thorpe, 1844)</small>
  • Assiminea lucida <small>Pease, 1869</small>: synonym of Angustassiminea lucida <small>(Pease, 1869)</small> (original combination)
  • Assiminea microsculpta <small>Nevill, 1880</small>: synonym of Sculptassiminea microsculpta <small>(Nevill, 1880)</small> (original combination)
  • Assiminea miniata <small>Martens, 1866</small>: synonym of Assiminea brevicula <small>(Pfeiffer, 1855)</small>: synonym of Optediceros breviculum <small>(Pfeiffer, 1855)</small> (junior synonym)
  • Assiminea miyazakii <small>Habe, 1943</small>: synonym of Pseudomphala miyazakii <small>(Habe, 1943)</small> (original combination)
  • † Assiminea nicolasi R<small>Oman, 1912</small>: synonym of † Hydrobia nicolasi <small>(Roman, 1912)</small> (new combination)
  • Assiminea nitida <small>(Pease, 1865)</small>: this species belongs to the genus Paludinella as has been demonstrated by Thiele (1927, p.&nbsp;128), because of a different dentition and an open umbilicus: synonym of Angustassiminea nitida <small>(Pease, 1865)</small>
  • Assiminea ostiorum <small>Bavay, 1920</small>: synonym of Assiminea grayana <small>J. Fleming, 1828</small>
  • Assiminea pagodella <small>Hedley, 1903</small>: synonym of Ascorhis victoriae <small>(Tenison-Woods, 1878)</small>
  • Assiminea philippinica <small>Boettger, 1887</small>: synonym of Metassiminea philippinica <small>(Boettger, 1887)</small> (basionym)
  • Assiminea queenslandica <small>Thiele, 1927</small>: synonym of Taiwanassiminea affinis <small>(Böttger, 1887)</small>
  • Assiminea recta <small>Mousson, 1874</small>: synonym of Peringia ulvae <small>(Pennant, 1777)</small>
  • Assiminea relata <small>Cotton, 1942</small>; synonym of Cryptassiminea buccinoides <small>(Quoy & Gaimard, 1834)</small>
  • Assiminea riparia <small>van Benthem Jutting, 1963</small>: synonym of Taiwanassiminea riparia <small>(van Benthem Jutting, 1963)</small>
  • Assiminea rubella <small>Blanford, 1867</small>: synonym of Assiminea brevicula <small>(Pfeiffer, 1855)</small>: synonym of Optediceros breviculum <sup>(Pfeiffer, 1855)</sup> (junior synonym)
  • Assiminea rufostrigata <small>Hesse, 1916</small>: synonym of Pontiturboella rufostrigata <small>(Hesse, 1916)</small>
  • Assiminea satsumana <small>Habe, 1942</small>: synonym of Angustassiminea satsumana <small>(Habe, 1942)</small> (original combination)
  • Assiminea septentrionalis <small>Habe, 1942</small>: synonym of Assiminea japonica <small>E. von Martens, 1877</small>
  • Assiminea sororcula <small>van Benthem Jutting, 1963</small>: synonym of Taiwanassiminea sororcula <small>(van Benthem Jutting, 1963)</small>
  • † Assiminea stenochora <small>Cossmann, 1888</small>: synonym of † Lapparentia stenochora <small>(Cossmann, 1888)</small> (new combination)
  • Assiminea succinea <small>(Pfeiffer, 1840)</small> : Atlantic assiminea : synonym of Angustassiminea succinea <small>(L. Pfeiffer, 1840)</small>
  • Assiminea tasmanica <small>Tenison-Woods, 1876</small>: synonym of Cryptassiminea buccinoides <small>(Quoy & Gaimard, 1834)</small>
  • Assiminea tyttha <small>Melvill & Ponsonby, 1897</small>: synonym of Hydrocena noticola <small>Benson, 1856</small>
  • Assiminea violacea <small>Heude, 1882</small>: synonym of Euassiminea violacea <small>(Heude, 1882)</small> (superseded combination)
  • Assiminea vulgaris <small>(Webster, 1905)</small>: synonym of Angustassiminea vulgaris <small>(W. H. Webster, 1905)</small> (superseded combination)

References

  • Fleming, J. 1828. A history of British animals, exhibiting the descriptive characters and systematic arrangement of the genera and species of quadrupeds, birds, reptiles, fishes, Mollusca, and Radiata of the United Kingdom; including the indigenous, extirpated, and extinct kinds, together with periodical and occasional visitants. – pp. i–xxxii [= 1–23], 1–565, [1]. Edinburgh. (Bell & Bradfute).
  • Knight G.A.F. 1900. The etymology of the names Azeca and Assiminea of Leach. Journal of Conchology, 9: 271–276
  • R. Tucker Abbott, The Gastropod Genus Assiminea in the Philippines; Proceedings of the Academy of Natural Sciences of Philadelphia Vol. 110 (1958), pp.&nbsp;213–278
  • Vaught, K.C. (1989). A classification of the living Mollusca. American Malacologists: Melbourne, FL (USA). . XII, 195 pp.
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp.&nbsp;180–213
  • Gofas, S.; Afonso, J.P.; Brandào, M. (Ed.). (S.a.). Conchas e Moluscos de Angola = Coquillages et Mollusques d'Angola. [Shells and molluscs of Angola]. Universidade Agostinho / Elf Aquitaine Angola: Angola. 140 pp.
  • van Aartsen (2008). Basteria 72 (4–6) : 165–181

External links