Triturus rivularis Twitty, 1935, Copeia, 1935: 73. Holotype: MVZ 18131, by original designation. Type locality: "Gibson Creek, about one mile west of Ukiah, [Mendocino County,] California", USA.
Taricha rivularis — Wahlert, 1952, Copeia, 1952: 30. ; Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 27.
Taricha (Twittya) granulosa — Dubois and Raffaëlli, 2009, Alytes, 26: 67.
Western Red-bellied Newt (Bishop, 1943, Handb. Salamanders: 89; Stebbins, 1951, Amph. W. North Am.: 21; Schmidt, 1953, Check List N. Am. Amph. Rept., Ed. 6: 27)
Red-bellied Newt (Conant, Cagle, Goin, Lowe, Neill, Netting, Schmidt, Shaw, Stebbins, and Bogert, 1956, Copeia, 1956: 175; Stebbins, 1966, Field Guide W. North Am. Rept. Amph.: 39; Stebbins, 2003, Field Guide W. Rept. Amph., Ed. 3: 167; Tilley, Highton, and Wake, 2008, in Crother (ed.), Herpetol. Circ., 37: 23; Tilley, Highton, and Wake, 2012, in Crother (ed.), Herpetol. Circ., 39: 31).
Redbelly Newt (Collins, Huheey, Knight, and Smith, 1978, Herpetol. Circ., 7: 9; Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 36; Collins, 1997, Herpetol. Circ., 25: 10; Collins and Taggart, 2009, Standard Common Curr. Sci. Names N. Am. Amph. Turtles Rept. Crocodil., ed. 6: 16).
Northern California (USA) in Sonoma, Mendocino, Humboldt, and Del Norte counties.
Reviewed by Twitty, 1964, Cat. Am. Amph. Rept., 9: 1-2. Stebbins, 2003, Field Guide W. Rept. Amph., Ed. 3: 167-168, provided a brief account, figure, and map. Kuchta and Tan, 2006, J. Herpetol., 40: 561-565, discussed limited geographic genic variation across the geographic range.
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