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Isthmura Dubois and Raffaelli, 2012
Isthmura Dubois and Raffaëlli, 2012, Alytes, 28: 77–161. Type species: Spelerpes belli Gray, 1850, by original designation. Coined as a subgenus of Pseudoeurycea in the sense of excluding Ixalotriton.
Isthmura — Rovito, Vázquez-Almazán, Papenfuss, Parra-Olea, and Wake, 2015, Zool. J. Linn. Soc., 175: 185, treatment as a genus.
English Names
None noted.
Distribution
Montane Mexico from east-central Sonora and adjacent Chihuahua in the Sierra Madre Occidental and from southern Tamaulipas in the Sierra Madre Oriental south through Nayarit and Zacatecas to Tlaxcala, Hidalgo, west-central Veracruz, and the Sierra Madre del Sur of Guerrero and Oaxaca.
Comment
Formerly the Pseudoeurycea bellii group, removed from that genus by Rovito, Parra-Olea, Recuero, and Wake, 2015, Zool. J. Linn. Soc., 175: 184, to preserve the monophyly of Pseudoeurycea. Bryson, Zarza, Grummer, Parra-Olea, Flores-Villela, Klicka, and McCormack, 2018, Mol. Phylogenet. Evol., 125: 75–84, provided a tree and discussed the phylogenomic diversification across the Mexican highlands.
Contained taxa (7 sp.):
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