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Roberts’ False Brook Salamander (   Pseudoeurycea   robertsi   ) is a critically endangered plethodontid salamander, endemic to the Nevado de Toluca Volcano ( NTV ), Mexico. Little is known about the biology and ecology of this species, including its microhabitats. Thus, this study aimed to collect basic information about    P.   robertsi   . We sampled fourteen forested sites in the  NTV ; to corroborate the correct identification of the species we used genetic data, we assessed the variation in head morphometric measurements and dorsal colouration patterns amongst localities and the microhabitat features associated with    P.   robertsi    presence. Of the four potential salamander species,    P.   robertsi    was the most abundant (89.80%) and widely distributed (approximately within 130 km 2 ) salamander in the  NTV . We did not find significant variations in morphometry; however, we found significant differences in dorsal patterns between populations (in the number and size of segments of the dorsal stripe). The average total length for 185 adults was 89.15 mm (38.7–117.9 mm); we found seven patterns of dorsal stripe. We found 98% of    P.   robertsi    individuals under the bark of fallen logs in    Abies   religiosa    and    A.   religiosa   -   Pinus    sp. forests, with a higher number of detected salamanders in naturally-fallen logs than in cut logs (34% vs. 10%). Thus, keeping well-preserved    A.   religiosa    forests and retaining fallen logs is essential to    P.   robertsi    conservation.

herpetozoa

A Salamander tale: Relative abundance, morphometrics and microhabitat of the critically endangered Mexican salamander    Pseudoeurycea   robertsi    (Taylor, 1939)