Ambystoma subsalsum Taylor, 1943, Copeia, 1943: 152. Holotype: EHT-HMS 22139, by original designation; now FMNH 100007 according to Marx, 1976, Fieldiana, Zool., 69: 36. Type locality: "Lake Alchichica, Puebla", Mexico.
Ambystoma subsalsum — Smith and Taylor, 1948, Bull. U.S. Natl. Mus., 194: 11.
Ambystoma (Ambystoma) subsalsum — Tihen, 1958, Bull. Florida State Mus., Biol. Sci., 3: 3, 35.
Alchachica Salamander (Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 28).
Durango and Zacatecas, presumably to Puebla, Mexico (see comment).
Raffaëlli, 2007, Les Urodèles du Monde: 84, provided a brief account, figure, and map. Ambystoma subsalsum was resurrected from the synonymy of Ambystoma velasci for populations at low elevations from eastern Durango and Zacatecas (and presumably to Puebla, the site of the type locality) by Webb, 2004, Bull. Maryland Herpetol. Soc., 40: 122-143, where it had been placed by Brandon, Maruska, and Rumph, 1982 "1981", Bull. S. California Acad. Sci., 80: 112. The rationale behind this is not clear in the original publication (DRF) nor is the status of these populations with respect to Ambystoma velasci.
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