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 (...

On the first Subandean species of Myrmecium Latreille, 1824 (Araneae, Corinnidae) from the Cordillera del Cóndor, Ecuador

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On the first Subandean species of Myrmecium Latreille, 1824 (Araneae, Corinnidae) from the Cordillera del Cóndor, Ecuador 

The ant-mimicking spider genus Myrmecium Latreille, 1824, revised by Candiani & Bonaldo (2017), can be diagnosed from other Castianeirinae by the presence of three deep constrictions of the cephalothorax, the long and obliquely inserted pedicel, the sternum posterior margins projected between coxae IV, generally forming a T-shape, pleural sclerites between legs III and IV fused with the sternum and carapace, and coxae III and IV almost vertically oriented and separated by more than twice the width of coxa III (Candiani & Bonaldo 2017).

Peñaherrera-R., P., Guerrero-Molina, T. & Cisneros-Heredia, D. F. (2026). On the first Subandean species of Myrmecium Latreille, 1824 (Araneae, Corinnidae) from the Cordillera del Cóndor, Ecuador. Zootaxa 5810(1): 184-188. doi: 10.11646/zootaxa.5810.1.10