Necturus beyeri Viosca, 1937

Class: Amphibia > Order: Caudata > Family: Proteidae > Genus: Necturus > Species: Necturus beyeri

Necturus beyeri Viosca, 1937, Copeia, 1937: 123. Holotype: USNM 102674, by original designation. Type locality: "Upper Calcasieu River near Oakdale, [Allen Parish,] Louisiana", USA.

Necturus maculosus beyeriSchmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 13.

Necturus beyeri beyeriHecht, 1958, Proc. Staten Island Inst. Arts Sci., 21: 16.

Necturus punctatus beyeriBrode, 1970, Dissert. Abstr. Internatl., Ser. B, 30: 5288.

Necturus (Parvurus) beyeriDubois and Raffaëlli, 2012, Alytes, 28: 147.

English Names

Beyer's Mudpuppy (Bishop, 1943, Handb. Salamanders: 29).

Speckled Waterdog (Viosca, 1949, Pop. Sci. Bull., Louisiana Acad. Sci., 1: 9).

Beyer's Waterdog (Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 13).

Gulf Coast Waterdog (Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 13; Conant, Cagle, Goin, Lowe, Neill, Netting, Schmidt, Shaw, Stebbins, and Bogert, 1956, Copeia, 1956: 175; Conant, 1975, Field Guide Rept. Amph. E. Cent. N. Am., Ed. 2: 244; Collins, Huheey, Knight, and Smith, 1978, Herpetol. Circ., 7: 7; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 34; Collins, 1997, Herpetol. Circ., 25: 7; Crother, Boundy, Campbell, de Queiroz, Frost, Highton, Iverson, Meylan, Reeder, Seidel, Sites, Taggart, Tilley, and Wake, 2001 "2000", Herpetol. Circ., 29: 24; Collins and Taggart, 2009, Standard Common Curr. Sci. Names N. Am. Amph. Turtles Rept. Crocodil., ed. 6: 15; Tilley, Highton, and Wake, 2012, in Crother (ed.), Herpetol. Circ., 39: 28; Highton, Bonett, and Jockusch, 2017, in Crother (ed.), Herpetol. Circ., 43: 30).


West-central Louisiana to northeastern and eastern Texas, USA. See comment for unnamed species associated with this name found outside of this range.


See comments under Necturus alabamensis and Necturus lodingi. Bart, Bailey, Ashton, and Moler, 1997, J. Herpetol., 31: 192-201, suggested that this nominal taxon likely contains more than one species, USA, and suggested that populations on the eastern Gulf slope from Lake Pontchartrain through Ochlockonee river drainages be referred to as "Necturus sp. cf. beyeri". See account by Petranka, 1998, Salamand. U.S. Canada: 419–422. Guyer, 2005, in Lannoo (ed.), Amph. Declines: 867–868, provided a detailed account that summarized the biology and conservation literature. Raffaëlli, 2013, Urodeles du Monde, 2nd ed.: 220, provided a brief account, photograph, and map. Altig and McDiarmid, 2015, Handb. Larval Amph. US and Canada: 127, provided an account of larval morphology and biology. Chabarria, Murray, Moler, Bart, Crother, and Guyer, 2018, J. Zool. Syst. Evol. Res., 56: 352–363, discussed the systematics of this complex, restricting the name Necturus beyeri to western Louisiana and eastern Texas, USA. The authors recognized a (1) Pearl River species from the Pearl River drainage of southeastern Louisiana and south-central Mississippi; and (2) a Mobile River species from the eastern quarter of Mississippi through central and northern Alabama to northeastern Georgia, USA. 

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