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Incilius alvarius (Girard, 1859)
Bufo alvarius Girard In Baird, 1859, Rep. U.S-Mex. Bound. Surv., 2(Pt. 2-Rept.): 26. Syntypes: USNM 2571-72, according to Kellogg, 1932, Bull. U.S. Natl. Mus., 160: 38-39 (see discussion by Fouquette, 1968, Great Basin Nat., 28: 70-72); USNM 2572 considered "holotype" in error by Cope, 1889, Bull. U.S. Natl. Mus., 34: 267, but subsequently designated lectotype formally by Fouquette, 1968, Great Basin Nat., 28: 71. Type locality: "Valley of the Gila and Colorado [Rivers]"; corrected to "Fort Yuma, Cal[ifornia].", USA by Cope, 1889, Bull. U.S. Natl. Mus., 34: 267; restricted to "Yuma", Yuma Co., Arizona by Smith and Taylor, 1950, Univ. Kansas Sci. Bull., 33: 355; restricted to "Colorado River bottomlands below Yuma, Arizona", USA, by Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 61; corrected to "[old] Fort Yuma, Imperial County, California (on the north bank of the Colorado River, opposite its junction with the Gila River", USA, by Fouquette, 1968, Great Basin Nat., 28: 70-72.
Phrynoidis alvarius — Cope, 1862, Proc. Acad. Nat. Sci. Philadelphia, 14: 358.
Cranopsis alvaria — Frost, Grant, Faivovich, Bain, Haas, Haddad, de Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green, and Wheeler, 2006, Bull. Am. Mus. Nat. Hist., 297: 364.
Ollotis alvaria — Frost, Grant, and Mendelson, 2006, Copeia, 2006: 558, by implication.
Incilius alvarius — Frost, Mendelson, and Pramuk, 2009, Copeia, 2009: 418, by implication.
Bufo (Incilius) alvarius — Fouquette and Dubois, 2014, Checklist N.A. Amph. Rept.: 314. See comment under Bufonidae regarding how this arrangement is part of a a system that requires widespread paraphyly.
English Names
Colorado Toad (Cooper, 1873, Proc. California Acad. Sci., 4: 66).
Girard's Toad (Yarrow, 1882, Bull. U.S. Natl. Mus., 24: 23).
Colorado River Toad (Storer, 1925, Univ. California Publ. Zool., 27: 43; Wright and Wright, 1933, Handb. Frogs Toads U.S. Canada: ix; Stebbins, 1951, Amph. W. North Am.: 229; Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 61; Conant, Cagle, Goin, Lowe, Neill, Netting, Schmidt, Shaw, Stebbins, and Bogert, 1956, Copeia, 1956: 176; Stebbins, 1966, Field Guide W. North Am. Rept. Amph.: 59; Collins, Huheey, Knight, and Smith, 1978, Herpetol. Circ., 7: 10; Liner, 1994, Herpetol. Circ., 23: 16; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 40; Collins, 1997, Herpetol. Circ., 25: 11; Crother, Boundy, Campbell, de Queiroz, Frost, Highton, Iverson, Meylan, Reeder, Seidel, Sites, Taggart, Tilley, and Wake, 2001 "2000", Herpetol. Circ., 29: 6).
Giant Toad (Slevin, 1928, Occas. Pap. California Acad. Sci., 16: 108).
Sonoran Desert Toad (Stebbins, 1985, Field Guide W. Rept. Amph., Ed. 2: 69; Stebbins, 2003, Field Guide W. Rept. Amph., Ed. 3: 207; Frost, McDiarmid, and Mendelson, 2008, in Crother (ed.), Herpetol. Circ., 37: 9; Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 18; Collins and Taggart, 2009, Standard Common Curr. Sci. Names N. Am. Amph. Turtles Rept. Crocodil., ed. 6: 6; Frost, McDiarmid, Mendelson, and Green, 2012, in Crother (ed.), Herpetol. Circ., 39: 16; Frost, Lemmon, McDiarmid, and Mendelson, 2017, in Crother (ed.), Herpetol. Circ., 43: 12).
Distribution
Extreme southeastern California, southern Arizona, and extreme southwestern New Mexico (USA) and adjacent northwestern Chihuahua (Mexico) south through Sonora and to northwestern Sinaloa (Mexico) in arid tropical scrub and desert up to oak woodland and juniper-grassland, sea level to 1763 m elevation.
Geographic Occurrence
Natural Resident: Mexico, United States of America, United States of America - Arizona, United States of America - California, United States of America - New Mexico
Comment
Reviewed by Fouquette, 1970, Cat. Am. Amph. Rept., 93: 1-4. In the monotypic Bufo alvarius group of Martin, 1972, in Blair (ed.), Evol. Genus Bufo: 40. Stebbins, 2003, Field Guide W. Rept. Amph., Ed. 3: 207-208, provided a brief account, figure, and map. Mendelson, Mulcahy, Williams, and Sites, 2011, Zootaxa, 3138: 1-34, suggested on the basis of morphology and molecular evidence that Incilius alvarius is the sister taxon of Incilius occidentalis + Incilius mccoyi and otherwise in an unnamed monophyletic group (the name Incilius alvarius group is availabe-DRF) including Incilius alvarius, Incilius occidentalis, Incilius mccoyi, and Incilius tacanensis. Lemos-Espinal, 2007, Anf. Rept. Chihuahua Mexico: 33-34, provided an account (as Bufo alvarius) for Chihuahua. Oliver-López, Woolrich-Piña, and Lemos-Espinal, 2009, Fam. Bufonidae Mex.: 55–57, provided an account (as Ollotis alvaria), although the range map is imprecise and substantially incorrect for the USA. Dodd, 2013, Frogs U.S. and Canada, 1: 177–180, provided an account (as Ollotis alvaria) that summarized relevant literature. Fouquette, Painter, and Nanjappa, 2005, in Lannoo (ed.), Amph. Declines: 384–386, provided a brief but detailed account. Elliot, Gerhardt, and Davidson, 2009, Frogs and Toads of N. Am.: 168–169, provided an account, photos, and advertisement call. Altig and McDiarmid, 2015, Handb. Larval Amph. US and Canada: 186–187, provided an account of larval morphology and biology. Painter, Stuart, Giermakowski, and Pierce, 2017, Western Wildlife, 4: 35, commented on the status and county range in New Mexico, USA.
External links:
Please note: these links will take you to external websites not affiliated with the American Museum of Natural History. We are not responsible for their content.
- For additional sources of general information from other websites search Google
- For access to relevant technical literature search Google Scholar
- For images search CalPhoto Images and Google Images
- To search the NIH genetic sequence database, see GenBank
- For additional information see AmphibiaWeb report
- For information on conservation status and distribution see the IUCN Redlist
- For information on distribution, habitat, and conservation see the Map of Life
- For related information on conservation and images as well as observation see iNaturalist
- For access to available specimen data for this species, from over 350 scientific collections, go to Vertnet.