A new species of the mygalomorph spider genus Euagrus Ausserer (Araneae: Euagridae) from central Mexico and new records of E. gus Coyle from Tlaxcala

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  A new species of the mygalomorph spider genus Euagrus Ausserer (Araneae: Euagridae) from central Mexico and new records of E. gus Coyle from Tlaxcala Abstract  A new species of the spider genus Euagrus Ausserer, 1875 from temperate pine-oak forests in the states of Tlaxcala and Hidalgo, Mexico is described: E. pulque sp. nov. The description of the new species is based on male and female adult specimens. Additionally, Euagrus gus Coyle, 1988 is recorded for the very first time in the state of Tlaxcala. These species have sympatric distributions in La Malinche National Park, Tlaxcala. With this description, the diversity of the genus increases to 23 species, with Mexico harboring the highest diversity with 17 described species.  Valdez-Mondragón, A., Salinas-Velasco, H. V. & Bueno-Villegas, J. (2026). A new species of the mygalomorph spider genus Euagrus Ausserer (Araneae: Euagridae) from central Mexico and new records of E. gus Coyle from Tlaxcala. Zootaxa 5810 (...

Current state of knowledge of the spider (Araneae) diversity in Baja California Sur, Mexico

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Current state of knowledge of the spider (Araneae) diversity in Baja California Sur, Mexico

Abstract


Based on a comprehensive review of the literature, we present a checklist comprising 326 species, 170 genera, and 43 families of spiders found in Baja California Sur, Mexico. This state ranks third nationally in spider diversity and harbors greater species richness than neighboring states. We highlighted endemic, medically important, and introduced species, such as Califorctenus cacachilensis Jimenez, Berrian, Polotov & Palacios-Cardiel, 2017, Latrodectus hesperus Chamberlin & Ivie, 1935, and Amaurobius ferox (Walckenaer, 1830), respectively. The regional collection, located in La Paz, serves as an important reference for the arachnid and insect fauna of the region.

Tras una exhaustiva revisión bibliográfica, presentamos una lista que comprende 326 especies, 170 géneros y 43 familias de arañas encontradas en Baja California Sur, México. Este estado ocupa el tercer lugar a nivel nacional en diversidad de arañas y alberga una mayor riqueza de especies que los estados vecinos. Destacamos especies endémicas, de importancia médica e introducidas, como Califorctenus cacachilensis Jimenez, Berrian, Polotov & Palacios-Cardiel, 2017, Latrodectus hesperus Chamberlin & Ivie, 1935 y Amaurobius ferox (Walckenaer, 1830), respectivamente. La colección regional, ubicada en La Paz, sirve como una importante referencia de la fauna de arácnidos e insectos de la región.


María-Luisa Jiménez, David Chamé-Vázquez "Current state of knowledge of the spider (Araneae) diversity in Baja California Sur, Mexico," The Pan-Pacific Entomologist, 101(2), 161-183, (27 June 2025) https://doi.org/10.3956/2025-101.2.161