| Aphrastochthonius alteriae Muchmore, 1977 | |
| Aphrastochthonius grubbsi Muchmore, 1984 | Texas azalea |
| Aphrastochthonius major Muchmore, 1973 | Mountain azalea |
| Aphrastochthonius pachysetus Muchmore, 1976 | Chapman's rhododendron |
| Aphrastochthonius palmitensis Muchmore, 1986 | California azalea |
| Aphrastochthonius parvus Muchmore, 1972 | Rhodora |
| Aphrastochthonius patei Muchmore, 1982 | Great laurel |
| Aphrastochthonius pecki Muchmore, 1968 | Kamchatka rhododendron |
| Aphrastochthonius russelli Muchmore, 1972 | Rhodora |
| Aphrastochthonius similis Muchmore, 1984 | Texas azalea |
| Aphrastochthonius tenax Chamberlin, 1962 | |
| Apochthonius coecus Packard, 1884 | |
| Apochthonius colecampi Muchmore, 1967 | Flame azalea |
| Apochthonius diabolus Muchmore, 1967 | Flame azalea |
| Apochthonius forbesi Benedict, 1979 | |
| Apochthonius grubbsi Muchmore, 1980 | Lapland rosebay |
| Apochthonius hobbsi Muchmore, 1994 | |
| Apochthonius holsingeri Muchmore, 1967 | Flame azalea |
| Apochthonius hypogeus Muchmore, 1976 | Chapman's rhododendron |
| Apochthonius indianensis Muchmore, 1967 | Flame azalea |
| Apochthonius intermedius Chamberlin, 1929 | |
| Apochthonius irwini R. O. Schuster, 1966 | Trinidad milkvetch |
| Apochthonius knowltoni Muchmore, 1980 | Lapland rosebay |
| Apochthonius magnanimus Hoff, 1956 | September elm |
| Apochthonius malheuri Benedict & M..., 1973 | |
| Apochthonius maximus R. O. Schuster, 1966 | Trinidad milkvetch |
| Apochthonius minimus R. O. Schuster, 1966 | Trinidad milkvetch |
| Apochthonius minor Muchmore, 1976 | Chapman's rhododendron |
| Apochthonius moestus Banks, 1891 | |
| Apochthonius mysterius Muchmore, 1976 | Chapman's rhododendron |
| Apochthonius occidentalis Chamberlin, 1929 | |
| Apochthonius paucispinosus Muchmore, 1967 | Flame azalea |
| Apochthonius russelli Muchmore, 1976 | Chapman's rhododendron |
| Apochthonius titanicus Muchmore, 1976 | Chapman's rhododendron |
| Apochthonius typhlus Muchmore, 1967 | Flame azalea |
| Austrochthonius mordax Beier, 1967 | |
| Chthonius (Chthonius) ischnocheles Hermann, 1804 | Common Chthonid |
| Chthonius ischnocheles ischnocheles Hermann, 1804 | |
| Chthonius (Chthonius) pacificus Muchmore, 1968 | Common spiny lobster |
| Chthonius (Chthonius) paganus Hoff, 1961 | Southern spiny lobster |
| Chthonius (Chthonius) paludis Chamberlin, 1929 | Pink spiny lobster |
| Chthonius (Chthonius) pearsei Hoff, 1945 | |
| Chthonius (Chthonius) troglodites Redikorzev, 1928 | |
| Chthonius (Ephippiochthonius) tetrachelatus Preyssler, 1790 | Dimple-clawed Chthonid |
| Chthonius (Ephippiochthonius) virginicus Chamberlin, 1929 | |
| Chthonius (Hesperochthonius) californicus Chamberlin, 1929 | |
| Chthonius (Hesperochthonius) oregonicus Muchmore, 1968 | Japanese spear lobster |
| Chthonius (Hesperochthonius) spingolus R. O. Schuster, 1962 | |
| Chthonius coecus (Packard, 1884) | ⇒ Apochthonius coecus Packard, 1884 |
| Chthonius longipalpis (Banks, 1891) | ⇒ Chthonius tetrachelatus Preyssler, 1790 |
| Chthonius moestus (Banks, 1891) | ⇒ Apochthonius moestus Banks, 1891 |
| Chthonius pennsylvanicus | |
| Chthonius spinosus (Banks, 1893) | ⇒ Verrucaditha spinosa Banks, 1893 |
| Ephippiochthonius tetrachelatus Preyssler, 1790 | Dimple-clawed Chthonid |
| Ephippiochthonius virginicus Chamberlin, 1929 | |
| Hesperochthonius californicus Chamberlin, 1929 | |
| Hesperochthonius oregonicus Muchmore, 1968 | |
| Hesperochthonius spingolus R.O.Schuster, 1962 | |
| Kleptochthonius (Chamberlinochthonius) affinis Muchmore, 1976 | Chapman's rhododendron |
| Kleptochthonius (Chamberlinochthonius) anophthalmus Muchmore, 1970 | Kamchatka rhododendron |
| Kleptochthonius (Chamberlinochthonius) attenuatus Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) barri Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) binoculatus Muchmore, 1974 | Carolina azalea |
| Kleptochthonius (Chamberlinochthonius) cerberus Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) charon Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) daemonius Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) erebicus Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) gertschi Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) hageni Muchmore, 1963 | Dwarf azalea |
| Kleptochthonius (Chamberlinochthonius) henroti Vachon, 1952 | |
| Kleptochthonius (Chamberlinochthonius) hetricki Muchmore, 1974 | Carolina azalea |
| Kleptochthonius (Chamberlinochthonius) hubrichti Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) infernalis Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) krekeleri Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) lutzi Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) microphthalmus Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) myopius Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) myoplus Malcolm & J...., 1961 | |
| Kleptochthonius (Chamberlinochthonius) orpheus Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) packardi Hagen, 1879 | |
| Kleptochthonius (Chamberlinochthonius) pluto Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) proserpinae Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) proximosetus Muchmore, 1976 | Chapman's rhododendron |
| Kleptochthonius (Chamberlinochthonius) regulus Muchmore, 1970 | Kamchatka rhododendron |
| Kleptochthonius (Chamberlinochthonius) rex Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Chamberlinochthonius) similis Muchmore, 1976 | Chapman's rhododendron |
| Kleptochthonius (Chamberlinochthonius) stygius Muchmore, 1965 | Florida azalea |
| Kleptochthonius (Chamberlinochthonius) tantalus Muchmore, 1966 | Baker's rhododendron |
| Kleptochthonius (Kleptochthonius) crosbyi Chamberlin, 1929 | |
| Kleptochthonius (Kleptochthonius) geophilus Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Kleptochthonius) griseomanus Muchmore, 2000 | |
| Kleptochthonius (Kleptochthonius) inusitatus Muchmore, 1994 | |
| Kleptochthonius (Kleptochthonius) lewisorum Muchmore, 2000 | |
| Kleptochthonius (Kleptochthonius) magnus Muchmore, 1966 | Baker's rhododendron |
| Kleptochthonius (Kleptochthonius) multispinosus Hoff, 1945 | |
| Kleptochthonius (Kleptochthonius) oregonus Malcolm and ..., 1961 | Balsam pear |
| Kleptochthonius (Kleptochthonius) polychaetus Muchmore, 1994 | |
| Kleptochthonius (Kleptochthonius) sheari Muchmore, 1994 | |
| Malcolmochthonius malcolmi Benedict, 1978 | |
| Malcolmochthonius oregonus Benedict, 1978 | |
| Malcolmochthonius perplexus Benedict, 1978 | |
| Mexichthonius exoticus Muchmore, 1996 | |
| Mexichthonius pacal Muchmore, 1978 | Oconee azalea |
| Mexichthonius unicus Muchmore, 1975 | Catawba rhododendron |
| Mundochthonius cavernicola Muchmore, 1968 | Cavernicolous pseudoscorpion |
| Mundochthonius erosidens Chamberlin, 1929 | |
| Mundochthonius holsingeri Benedict & M..., 1974 | |
| Mundochthonius magnus Chamberlin, 1929 | |
| Mundochthonius mexicanus Muchmore, 1973 | Mountain azalea |
| Mundochthonius montanus Chamberlin, 1929 | |
| Mundochthonius pacificus Banks, 1893 | |
| Mundochthonius rossi Hoff, 1949 | Chinese elm |
| Mundochthonius sandersoni Hoff, 1949 | Chinese elm |
| Mundochthonius singularis Muchmore, 2001 | |
| Neochthonius amplus R. O. Schuster, 1962 | |
| Neochthonius imperialis Muchmore, 1996 | |
| Neochthonius paludis Chamberlin, 1929 | |
| Neochthonius stanfordianus Chamberlin, 1929 | |
| Neochthonius troglodytes Muchmore, 1969 | |
| Pseudochthonius moralesi Muchmore, 1977 | |
| Pseudochthonius troglobius Muchmore, 1986 | California azalea |
| Pseudochthonius yucatanus Muchmore, 1977 | |
