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 km2) 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.

中文翻译：

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Sal的故事：濒临灭绝的墨西哥sal Pseudoeurycea robertsi的相对丰度，形态计量学和微栖息地（泰勒，1939年）

罗伯茨的福克斯布鲁克Sal（Pseudoeurycea robertsi）是一种濒临灭绝的兽齿sal，是墨西哥内华多·德·托卢卡火山（NTV）的特有物种。人们对该物种的生物学和生态学（包括其微生境）知之甚少。因此，本研究旨在收集有关罗伯特体育的基本信息。我们在NTV中采样了14个森林站点；为了证实我们使用遗传数据对物种的正确识别，我们评估了头部形态测量值和背侧着色模式之间的差异以及与罗伯特·罗伯特西存在相关的微生境特征。在四种潜在sal中，罗伯特·P·罗伯特西was是NTV中数量最多的sal（分布在130 km2之内）。我们没有发现形态上的显着变化。然而，我们发现人群之间的背侧模式存在显着差异（背侧条纹的数量和大小）。185名成年人的平均总长度为89.15毫米（38.7–117.9毫米）；我们发现了七种背条纹图案。我们在落叶松和A. religiosa-Pinus sp。的落叶原木树皮下发现了98％的罗伯特·罗伯特氏菌。森林中，自然倒下的原木中发现的sal比砍伐的原木高（34％比10％）。因此，保持罗汉果木保存完好的森林和砍伐原木对于罗伯特体育的保护至关重要。罗伯特（Robertsi）个人被倒下的冷杉木和A. religiosa-Pinus sp。森林中，自然倒下的原木中发现的sal比砍伐的原木高（34％比10％）。因此，保持罗汉果木保存完好的森林和砍伐原木对于罗伯特体育的保护至关重要。罗伯特（Robertsi）个人被倒下的冷杉木和A. religiosa-Pinus sp。森林中，自然倒下的原木中发现的sal比砍伐的原木高（34％比10％）。因此，保持罗汉果木保存完好的森林和砍伐原木对于罗伯特体育的保护至关重要。