This is a list of the described species of the pseudoscorpion family Chthoniidae. The data is taken from Joel Hallan's Biology Catalog. Afrochthonius Beier, 1930 Afrochthonius brincki Beier, 1955 — Lesotho Afrochthonius ceylonicus Beier, 1973 — Sri Lanka Afrochthonius godfreyi (Ellingsen, 1912) — Southern Africa Afrochthonius inaequalis Beier, 1958 — Southern Africa Afrochthonius natalensis Beier, 1931 — Southern Africa Afrochthonius reductus Beier, 1973 — Sri Lanka Afrochthonius similis Beier, 1930 — Namibia Allochthonius J.C. Chamberlin, 1929 Allochthonius borealis Sato, 1984 — Japan Allochthonius buanensis W.K.Lee, 1982 — Korea Allochthonius kinkaiensis Sakayori, 2002 — Japan Allochthonius montanus Sakayori, 2000 — Honshu, Tochigi, Mount Kohshin, Japan Allochthonius opticus (Ellingsen, 1907) — Japan Allochthonius opticus opticus (Ellingsen, 1907) — Japan Allochthonius opticus coreanus Morikawa, 1970 — Korea Allochthonius opticus troglophilus Morikawa, 1956 — Japan Allochthonius shintoisticus J.C. Chamberlin, 1929 — Japan Allochthonius tamurai Sakayori, 1999 — Japan Allochthonius biocularis (Morikawa, 1956) — Japan Allochthonius ishikawai (Morikawa, 1954) — Japan Allochthonius ishikawai ishikawai (Morikawa, 1954) — Japan Allochthonius ishikawai deciclavatus (Morikawa, 1956) — Japan Allochthonius ishikawai kyushuensis (Morikawa, 1960) — Japan Allochthonius ishikawai shiragatakiensis (Morikawa, 1954) — Japan Allochthonius ishikawai uenoi (Morikawa, 1956) — Japan Allochthonius uyamadensis (Morikawa, 1954) — Japan Aphrastochthonius J.C. Chamberlin, 1962 Aphrastochthonius alteriae Muchmore, 1977 — Mexico Aphrastochthonius cubanus Dumitresco & Orghidan, 1977 — Cuba Aphrastochthonius grubbsi Muchmore, 1984 — California Aphrastochthonius major Muchmore, 1973 — Mexico Aphrastochthonius pachysetus Muchmore, 1976 — New Mexico Aphrastochthonius palmitensis Muchmore, 1986 — Mexico Aphrastochthonius parvus Muchmore, 1972 — Mexico Aphrastochthonius patei Muchmore, 1982 — Mexico Aphrastochthonius pecki Muchmore, 1968 — Alabama Aphrastochthonius russelli Muchmore, 1972 — Mexico Aphrastochthonius similis Muchmore, 1984 — California Aphrastochthonius tenax J.C. Chamberlin, 1962 Aphrastochthonius verapazanus Muchmore, 1972 — Guatemala Apochthonius J.C. Chamberlin, 1929 Apochthonius coecus (Packard, 1884) — Virginia Apochthonius colecampi Muchmore, 1967 — Missouri Apochthonius diabolus Muchmore, 1967 — Arkansas Apochthonius forbesi Benedict, 1979 — Oregon Apochthonius grubbsi Muchmore, 1980 — California Apochthonius hobbsi Muchmore, 1994 — Ohio Apochthonius holsingeri Muchmore, 1967 — Virginia Apochthonius hypogeus Muchmore, 1976 — Virginia Apochthonius indianensis Muchmore, 1967 — Indiana Apochthonius intermedius J.C. Chamberlin, 1929 — Washington Apochthonius irwini R.O. Schuster, 1966 — California Apochthonius knowltoni Muchmore, 1980 — Wyoming Apochthonius magnanimus Hoff, 1956 — New Mexico Apochthonius malheuri Benedict & Malcolm, 1973 — Oregon Apochthonius maximus R.O. Schuster, 1966 — California Apochthonius minimus R.O. Schuster, 1966 — British Columbia, Oregon, Washington Apochthonius minor Muchmore, 1976 — Georgia Apochthonius moestus (Banks,