Orthoporus is a genus of spirostreptid millipedes, containing around 80 species, distributed from the southern United States to Brazil and Argentina.
- Orthoporus absconsus <small>Chamberlin, 1922</small>
- Orthoporus acanthethus <small>Chamberlin, 1947</small>
- Orthoporus ampussis <small>(Karsch, 1881)</small>
- Orthoporus araguayensis <small>Schubart, 1947</small>
- Orthoporus asper <small>(Attems, 1950)</small>
- Orthoporus bidens <small>Schubart, 1945</small>
- Orthoporus bisulcatus <small>Chamberlin, 1952</small>
- Orthoporus bobos <small>Chamberlin, 1952</small>
- Orthoporus boreus <small>Chamberlin, 1947</small>
- Orthoporus brasiliensis <small>Schubart, 1947</small>
- Orthoporus caelatus <small>Loomis, 1936</small>
- Orthoporus canalis <small>(Chamberlin, 1925)</small>
- Orthoporus capucinus <small>(Attems, 1950)</small>
- Orthoporus cayennophilus <small>(Silvestri, 1897)</small>
- Orthoporus chihuanus <small>Chamberlin, 1947</small>
- Orthoporus chiriquensis <small>Pocock, 1909</small>
- Orthoporus cienegonus <small>Chamberlin, 1952</small>
- Orthoporus clavicollis <small>(Karsch, 1881)</small>
- Orthoporus cluniculus <small>(Humbert & Saussure, 1870)</small>
- Orthoporus cobanus <small>Chamberlin, 1922</small>
- Orthoporus comminutus <small>(Attems, 1950)</small>
- Orthoporus conifer <small>(Attems, 1950)</small>
- Orthoporus cordovanus <small>Pocock, 1909</small>
- Orthoporus diaporoides <small>Silvestri, 1897</small>
- Orthoporus discriminans <small>Chamberlin, 1922</small>
- Orthoporus dybasi <small>(Chamberlin, 1952)</small>
- Orthoporus esperanzae <small>Chamberlin, 1943</small>
- Orthoporus etholax <small>Chamberlin, 1923</small>
- Orthoporus euthus <small>Chamberlin, 1952</small>
- Orthoporus extensus <small>Loomis, 1966</small>
- Orthoporus festae <small>(Silvestri, 1896)</small>
- Orthoporus flavior <small>Chamberlin & Mulaik, 1941</small>
- Orthoporus foliatus <small>Chamberlin, 1923</small>
- Orthoporus fraternus <small>(Saussure, 1860)</small>
- Orthoporus gaigei <small>Chamberlin, 1923</small>
- Orthoporus gracilior <small>Chamberlin, 1952</small>
- Orthoporus guerreronus <small>(Chamberlin, 1942)</small>
- Orthoporus haitiensis <small>Chamberlin, 1918</small>
- Orthoporus heterogona <small>Silvestri, 1902</small>
- Orthoporus hoctunicolens <small>Chamberlin, 1938</small>
- Orthoporus kiemi <small>Loomis, 1962</small>
- Orthoporus leius <small>Chamberlin, 1943</small>
- Orthoporus leonicus <small>Chamberlin, 1941</small>
- Orthoporus lomonti <small>Brölemann, 1932</small>
- Orthoporus luchilicolens <small>Chamberlin, 1938</small>
- Orthoporus margarites <small>(Chamberlin, 1946)</small>
- Orthoporus mimus <small>Chamberlin, 1943</small>
- Orthoporus montezumae <small>(Saussure, 1859)</small>
- Orthoporus mundus <small>Chamberlin, 1942</small>
- Orthoporus nesiotes <small>Chamberlin, 1923</small>
- Orthoporus nodosus <small>Loomis, 1974</small>
- Orthoporus omalopage <small>(Brölemann, 1905)</small>
- Orthoporus ornatus <small>(Girard, 1853)</small>
- Orthoporus palmensis <small>(Brölemann, 1905)</small>
- Orthoporus paxillicauda <small>Loomis, 1962</small>
- Orthoporus poculifer <small>Silvestri, 1897</small>
- Orthoporus punctatissimus <small>Silvestri, 1897</small>
- Orthoporus reimoseri <small>(Attems, 1950)</small>
- Orthoporus rodriguezi <small>(Brölemann, 1900)</small>
- Orthoporus rugiceps <small>(Attems, 1950)</small>
- Orthoporus salvadoricus <small>(Kraus, 1954)</small>
- Orthoporus sanctus <small>Chamberlin, 1947</small>
- Orthoporus sculpturatus <small>(Karsch, 1881)</small>
- Orthoporus solicolens <small>Chamberlin, 1938</small>
- Orthoporus striatulus <small>Pocock, 1909</small>
- Orthoporus tabulinus <small>Attems, 1914</small>
- Orthoporus teapensis <small>Pocock, 1909</small>
- Orthoporus tehuacanus <small>Chamberlin, 1952</small>
- Orthoporus texicolens <small>Chamberlin, 1938</small>
- Orthoporus tizamensis <small>Chamberlin, 1938</small>
- Orthoporus torreonus <small>Chamberlin, 1943</small>
- Orthoporus triquetrus <small>Loomis, 1936</small>
- Orthoporus trisulcatus <small>(Daday, 1889)</small>
- Orthoporus vialis <small>Loomis, 1974</small>
- Orthoporus walkeri <small>Chamberlin, 1923</small>
- Orthoporus zizicolens <small>(Chamberlin, 1938)</small>
References