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 knowledge of spiders (Arachnida: Araneae) from Sinaloa, Mexico: species checklist and new records, including the first record of Plexippus petersi Karsch, 1878 for America

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Current knowledge of spiders (Arachnida: Araneae) from Sinaloa, Mexico: species checklist and new records, including the first record of Plexippus petersi Karsch, 1878 for America

Abstract

In this work, we provide the first spider checklist for Sinaloa, Mexico. After reviewing the literature and the examination of spiders collected in Sinaloa, the checklist comprises 31 families, 82 genera, and 118 species. The families Salticidae (17 species), Araneidae (15), and Theridiidae (13) are the most diverse in Sinaloa. Furthermore, we report the first record of the jumping spider Plexippus petersi Karsch, 1878 in America along with twelve state records of spiders of the families Anyphaenidae (1), Diguetidae (1), Filistatidae (1), Pholcidae (2), Salticidae (4), Sparassidae (1), and Thomisidae (2). Furthermore, we provide photographs of the habitus and copulatory organs of all new records.

Alcántar-Valenzuela, J. J., Chamé Vázquez, D., Jiménez, M.-L., & Castañeda de los Santos, G. (2024). Current knowledge of spiders (Arachnida: Araneae) from Sinaloa, Mexico: species checklist and new records, including the first record of Plexippus petersi Karsch, 1878 for America. ACTA ZOOLÓGICA MEXICANA (N.S.), 40(1), 1–27. https://doi.org/10.21829/azm.2024.4012671