Onychodactylus Tschudi, 1838
Onychodactylus Tschudi, 1838, Classif. Batr.: 57, 92. Type species: Onychodactylus schlegeli Tschudi, 1838 (= Salamandra japonicus Houttuyn, 1782), by monotypy.
Dactylonyx Bonaparte, 1839, Iconograph. Fauna Ital., 2 (Fasc. 26): unnumbered. Manuscript name credited to Bibron and provided as a synonym of Onychodactylus Tschudi.
Onychopus Duméril, Bibron, and Duméril, 1854, Erp. Gen., 9: 113. Substitute name for Onychodactylus Tschudi, 1838.
Clawed Salamanders (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 28).
From southern Far East Russia and nearby China to Wonsan in Korea and the mountains of Honshu and Shikoku Is., Japan.
Pyron and Wiens, 2011, Mol. Phylogenet. Evol., 61: 543-583, as part of a larger study confirmed the position of Onychodactylus as the sister taxon of remaining Hynobiidae. Poyarkov, Che, Min, Kuro-o, Yan, Li, Iizuka, and Vieites, 2012, Zootaxa, 3465: 1-106, revised the genus, redelimited the species, provided a molecular phylogeny, provided the species groups, and discussed the relevant literature, most of which referred populations to species which are restricted by these authors to much more restricted ranges. Dubois and Raffaëlli, 2012, Alytes, 28: 77-161, recognized placed Onychodactylus fisheri in the subgenus Geomolge and its sister taxon, including all of ther Onychodactylus in the subgenus Onychodactylus, following the results of Poyarkov et al., 2012. Raffaëlli, 2013, Urodeles du Monde, 2nd ed.: 46–51, provided brief accounts, photos, and maps for the species.
Contained taxa (10 sp.):
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