Check List 21(2): 443-450, doi: 10.15560/21.2.443

Filling gaps: on the distribution of Crotalus intermedius Troschel, 1865 (Squamata, Viperidae) and its first record in the State of Mexico, Mexico

Álvaro Monter-Pozos^‡, Erika Adriana Reyes-Velázquez^§, Oswaldo Hernández-Gallegos^|, Aldo Gómez-Benitez^§¶

‡ Unaffiliated, Cancún, Mexico§ Red de Investigación y Divulgación de Anfibios y Reptiles MX, Toluca de Lerdo, Mexico| Universidad Autónoma del Estado de México, Toluca, Mexico¶ Universidad Autónoma Metropolitana Unidad Lerma, Toluca de Lerdo, Mexico

Corresponding author: Aldo Gómez-Benitez ( gobeal940814@gmail.com )

Academic editor: Sebastian Lotzkat

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Monter-Pozos Á, Reyes-Velázquez EA, Hernández-Gallegos O, Gómez-Benitez A (2025) Filling gaps: on the distribution of Crotalus intermedius Troschel, 1865 (Squamata, Viperidae) and its first record in the State of Mexico, Mexico. Check List 21(2): 443-450. https://doi.org/10.15560/21.2.443

Abstract

Crotalus intermedius Troschel, 1865 is a venomous snake endemic to Mexico, inhabiting high-elevation forests and shrublands. This study presents the first formal record of C. intermedius from the State of Mexico and its potential distribution. Only 11.4% of its potential range overlaps with natural protected areas (NPA), with 10.1% in federal NPAs, including our new record from Monte Tláloc within Iztaccíhuatl-Popocatépetl National Park, and 1.3% in state NPAs. This finding fills a distribution gap in C. intermedius distribution and increases the number of venomous reptile species recorded in the State of Mexico to 16.

Keywords

Coniferous forest, distribution model, Iztaccíhuatl-Popocatépetl National Park, Mexican Small-headed Rattlesnake, Monte Tláloc, natural protected areas