Chthoniidae is a family of pseudoscorpions within the superfamily Chthonioidea. The family contains more than 600 species in about 30 genera. Fossil species are known from Baltic, Dominican, and Burmese amber. Chthoniidae now includes the former families Tridenchthoniidae, and Lechytiidae which has been demoted to subfamilies. Genera For a list of all currently described species see List of Chthoniidae species. Aphrastochthonius J. C. Chamberlin, 1962 — Mexico, southern US, Guatemala, Cuba Apochthonius J. C. Chamberlin, 1929 — North America Austrochthonius J. C. Chamberlin, 1929 — South America, Australia, New Zealand Caribchthonius Muchmore, 1976 — Caribbean Chiliochthonius Vitali-di Castri, 1975 — Chile Chthonius C. L. Koch, 1843 — Europe to Iran, North Africa, Balearic Islands, USA; one cosmopolitan species Congochthonius Beier, 1959 — Zaire Drepanochthonius Beier, 1964 — Chile Francochthonius Vitali-di Castri, 1975 — Chile Kleptochthonius J. C. Chamberlin, 1949 — USA Lagynochthonius Beier, 1951 — Australasia, Africa Malcolmochthonius Benedict, 1978 — USA Maorichthonius J. C. Chamberlin, 1925 — New Zealand Mexichthonius Muchmore, 1975 — Mexico, Texas Mundochthonius J. C. Chamberlin, 1929 — Eurasia, Dominican Republic, North America Neochthonius J. C. Chamberlin, 1929 — California, Romania (?) Paraliochthonius Beier, 1956 — Europe, Africa, Florida, several islands Pseudochthonius Balzan, 1892 — South, Central America, Africa Sathrochthoniella Beier, 1967 — New Zealand Sathrochthonius J. C. Chamberlin, 1962 — Australia to New Caledonia, South America Spelyngochthonius Beier, 1955 — Sardinia, Spain, France Stygiochthonius Carabajal Marquez, Garcia Carrillo & Rodriguez Fernandez, 2001 — Spain Troglochthonius Beier, 1939 — Italy, Yugoslavia Tyrannochthoniella Beier, 1966 — New Zealand Tyrannochthonius J. C. Chamberlin, 1929 — Brazil to southern USA, Australasia, Africa, Hawaii Vulcanochthonius Muchmore, 2000 — Hawai'i †Weygoldtiella Harvey et al., 2018 — Burmese amber, Myanmar Cenomanian †Prionochthonius — Burmese amber, Myanmar Cenomanian Tridenchthoniinae Anaulacodithella — Southern Africa, Australia, New Caledonia † Chelignathus Compsaditha — Africa, South America, South and Southeast Asia, Seychelles Cryptoditha — South America Ditha — Africa, Southeast Asia, Oceania Dithella — Southeast Asia Haploditha — South America Heterolophus — Australia, South America Neoditha — South America Pycnodithella — Africa, Australia Sororoditha — South America Tridenchthonius — Africa, South and Central America Typhloditha — Africa Verrucaditha — North America Verrucadithella — Africa, South America Lechytiinae Lechytia Balzan, 1892 Worldwide References Joel Hallan's Biology Catalog: Chthoniidae Pseudoscorpion families