| Diaporus barroensis (Chamberlin, 1925) | ⇒ Orthoporus festae Silvestri, 1896 |
| Diaporus culebrae (Chamberlin, 1922) | ⇒ Orthoporus festae Silvestri, 1896 |
| Gymnostreptus laetus (Chamberlin, 1922) | ⇒ Mayastreptus laetus Chamberlin, 1922 |
| Gymnostreptus pacificus (Chamberlin, 1922) | ⇒ Mayastreptus confragosus Karsch, 1881 |
| Gymnostreptus vagans Chamberlin, 1922 | |
| Isoporostreptus pittieri Hoffman, 1953 | Yucca shoulderband |
| Mayastreptus confragosus Karsch, 1881 | |
| Mayastreptus laetus Chamberlin, 1922 | |
| Mayastreptus vagans (Chamberlin, 1922) | ⇒ Gymnostreptus vagans Chamberlin, 1922 |
| Orthoporus absconsus Chamberlin, 1922 | |
| Orthoporus acanthethus Chamberlin, 1947 | Kyle Canyon mountainsnail |
| Orthoporus ampussis Karsch, 1881 | |
| Orthoporus asper Attems, 1950 | Chisos threeband |
| Orthoporus bisulcatus Chamberlin, 1952 | Keys mudcloak |
| Orthoporus bobos Chamberlin, 1952 | Keys mudcloak |
| Orthoporus canalis Chamberlin, 1925 | |
| Orthoporus capucinus (Attems, 1950) | ⇒ Scaphiostreptus capucinus Attems, 1950 |
| Orthoporus chihuanus Chamberlin, 1947 | Kyle Canyon mountainsnail |
| Orthoporus chiriquensis Pocock, 1909 | Boulder slide threeband |
| Orthoporus cienegonus (Chamberlin, 1952) | ⇒ Orthoporus cienogonus Chamberlin, 1952 |
| Orthoporus cobanus Chamberlin, 1922 | |
| Orthoporus comminutus Attems, 1950 | Chisos threeband |
| Orthoporus conifer Attems, 1950 | Chisos threeband |
| Orthoporus cordovanus Pocock, 1909 | Boulder slide threeband |
| Orthoporus discriminans Chamberlin, 1922 | |
| Orthoporus dybasi (Chamberlin, 1952) | ⇒ Scaphiostreptus dybasi Chamberlin, 1922 |
| Orthoporus entomacis (Chamberlin &..., 1941) | ⇒ Orthoporus ornatus Girard, 1853 |
| Orthoporus esperanzae Chamberlin, 1943 | Costate mountainsnail |
| Orthoporus euthus Chamberlin, 1952 | Keys mudcloak |
| Orthoporus extensus Loomis, 1966 | Hacheta mountainsnail |
| Orthoporus festae Silvestri, 1896 | Mitre Peak threeband |
| Orthoporus flavior Chamberlin &..., 1941 | Capote threeband |
| Orthoporus fraternus Saussure, 1860 | Fringed mountainsnail |
| Orthoporus glyphonotus | |
| Orthoporus gracilior Chamberlin, 1952 | Keys mudcloak |
| Orthoporus guerreronus Chamberlin, 1942 | San Carlos threeband |
| Orthoporus hoctunicolens Chamberlin, 1938 | Bigtree shoulderband |
| Orthoporus kiemi Loomis, 1962 | |
| Orthoporus leius Chamberlin, 1943 | Costate mountainsnail |
| Orthoporus leonicus Chamberlin, 1941 | Deep Slide mountainsnail |
| Orthoporus luchilicolens Chamberlin, 1938 | Bigtree shoulderband |
| Orthoporus margarites Chamberlin, 1946 | San Carlos threeband |
| Orthoporus mimus Chamberlin, 1943 | Costate mountainsnail |
| Orthoporus montezumae Saussure, 1859 | Pygmy mountainsnail |
| Orthoporus mundus Chamberlin, 1942 | Coalinga shoulderband |
| Orthoporus nesiotes Chamberlin, 1923 | Mt. Livermore threeband |
| Orthoporus nicaraguanus Chamberlin, 1925 | |
| Orthoporus nodosus Loomis, 1974 | Stockton Plateau threeband |
| Orthoporus omalopyge Brolemann, 1905 | |
| Orthoporus ornatus Girard, 1853 | Desert millipede |
| Orthoporus otomitus Saussure, 1859 | |
| Orthoporus palmensis Brölemann, 1905 | |
| Orthoporus paxillicauda Loomis, 1962 | |
| Orthoporus reimoseri Attems, 1950 | Chisos threeband |
| Orthoporus rodriguezi Brölemann, 1900 | Sidewinder shoulderband |
| Orthoporus rodriguezi coriaceus Brölemann, 1900 | |
| Orthoporus rugiceps (Attems, 1950) | ⇒ Orthoporus reimoseri Attems, 1950 |
| Orthoporus salvadoricus Kraus, 1954 | Chiricahua mountainsnail |
| Orthoporus simocolor | |
| Orthoporus solicolens Chamberlin, 1938 | Bigtree shoulderband |
| Orthoporus striatulus Pocock, 1909 | Boulder slide threeband |
| Orthoporus teapensis Pocock, 1909 | Boulder slide threeband |
| Orthoporus tehuacanus Chamberlin, 1952 | Keys mudcloak |
| Orthoporus texicolens Chamberlin, 1938 | Bigtree shoulderband |
| Orthoporus tizamensis Chamberlin, 1938 | Bigtree shoulderband |
| Orthoporus torreonus Chamberlin, 1943 | Costate mountainsnail |
| Orthoporus trisulcatus Daday, 1889 | Silky shoulderband |
| Orthoporus typotopyge Brölemann, 1905 | |
| Orthoporus unciferens Chamberlin, 1952 | |
| Orthoporus vialis Loomis, 1974 | Stockton Plateau threeband |
| Orthoporus walkeri Chamberlin, 1923 | |
| Orthoporus zizicolens Chamberlin, 1938 | San Lorenzo shoulderband |
