Bufo spiculatus Mendelson, 1997, Herpetologica, 53: 268. Holotype: KU 137523, by original designation. Type locality: "2.8 km S Vista Hermosa, Oaxaca, Mexico, 1570 m (17° 43′ N, 96° 22′ W)".
Cranopsis spiculata — 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 spiculata — Frost, Grant, and Mendelson, 2006, Copeia, 2006: 558. by implication.
Incilius spiculatus — Frost, Mendelson, and Pramuk, 2009, Copeia, 2009: 418-419. By implication.
Spiculate Toad (Liner and Casas-Andreu, 2008, Herpetol. Circ., 38: 18).
Cloud forest on the northern slopes of the Sierra de Juarez and the adjacent Sierra Mixe, Oaxaca, Mexico.
Similar to Incilius cavifrons (as Bufo) according to the original publication. See map, description of geographic range and habitat, and conservation status (as Bufo spiculatus) in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 191. Mendelson, Mulcahy, Williams, and Sites, 2011, Zootaxa, 3138: 1-34, suggested that this species is a member of a monophyletic Incilius valliceps group and in a subgroup they referred to as the Forest Group (the name Incilius cristatus subgroup is available—DRF) that includes Incilius aucoinae, Incilius cavifrons, Incilius campbelli, Incilius cristatus, Incilius leucomoyos, Incilius macrocristatus, Incilius melanochlorus, Incilius spiculatus, and Incilius tutelarius.
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