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Desmognathus Baird, 1850
Desmognathus Baird, 1850 "1849", J. Acad. Nat. Sci. Philadelphia, Ser. 2, 1: 282. Type species: Triturus fuscus Rafinesque, 1820, by the subsequent designation of Brown, 1908, Proc. Acad. Nat. Sci. Philadelphia, 60: 126. Placed on the Official List of Generic Names by Opinion 92, Anonymous, 1926, Smithson. Misc. Collect., 73: 3.
Leurognathus Moore, 1899, Proc. Acad. Nat. Sci. Philadelphia, 51: 316. Type species: Leurognathus marmorata Moore, 1899, by monotypy. Synonymy by Bernardo, 1994, Am. Nat., 143: 15; Titus and Larson, 1996, Syst. Biol., 45: 451–472. Treatment as a subgenus by Dubois and Raffaëlli, 2012, Alytes, 28: 145.
Geognathus Dubois and Raffaëlli, 2012, Alytes, 28: 145. Type species: Desmognathus wrighti King, 1936, by original designation. Coined as a subgenus of Desmognathus, but which renders the nominal subgenus paraphyletic.
Hydrognathus Dubois and Raffaëlli, 2012, Alytes, 28: 145. Type species: Desmognathus brimleyorum Stejneger, 1895, by original designation. Coined as a subgenus of Desmognathus, but which renders the nominal subgenus paraphyletic.
Dusky Salamanders (Jordan, 1878, Man. Vert. North. U.S., Ed. 2: 192; Conant, Cagle, Goin, Lowe, Neill, Netting, Schmidt, Shaw, Stebbins, and Bogert, 1956, Copeia, 1956: 174; Collins, Huheey, Knight, and Smith, 1978, Herpetol. Circ., 7: 5; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 31; Collins, 1997, Herpetol. Circ., 25: 6; Crother, Boundy, Campbell, de Queiroz, Frost, Highton, Iverson, Meylan, Reeder, Seidel, Sites, Taggart, Tilley, and Wake, 2001 "2000", Herpetol. Circ., 29: 20; Tilley, Highton, and Wake, 2012, in Crother (ed.), Herpetol. Circ., 39: 16; Tilley, Highton, and Wake, 2012, in Crother (ed.), Herpetol. Circ., 39: 25).
Eastern USA and southeastern Canada, west to eastern Oklahoma and Texas.
See accounts for all species in Petranka, 1998, Salamand. U.S. Canada: 159–216. Anderson and Tilley, 2003, Herpetol. Monogr., 17: 75–110, discussed the systematics of the Desmognathus ochrophaeus complex in central Tennessee. Macey, 2005, Cladistics, 21: 194–202, considered Desmognathus to be the sister taxon of Phaeognathus. Beamer and Lamb, 2008, Mol. Phylogenet. Evol., 47: 143–153, reported on the molecular phylonetics of the coastal plains group and cryptic species diversity. In the tribe Desmognathini of Vieites, Román, Wake, and Wake, 2011, Mol. Phylogenet. Evol., 59: 633. Powell, Collins, and Hooper, 2011, Key Herpetofauna U.S. & Canada, 2nd Ed.: 20–23, provided a key to the species. Dubois and Raffaëlli, 2012, Alytes, 28: 77–161, provided a subgeneric taxonomy that is misleading about evolutionary history, with a paraphyletic subgenus Desmognathus basal to a polyphyletic Geognathus, and a monophyletic Hydrognathus.
Contained taxa (23 sp.):
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