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 (...

FIRST CHECKLIST OF THE NON-ACARINE ARACHNIDS (CHELICERATA: ARACHNIDA) OF THE CHAPADA DIAMANTINA NATIONAL PARK, BRAZIL

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FIRST CHECKLIST OF THE NON-ACARINE ARACHNIDS (CHELICERATA: ARACHNIDA) OF THE CHAPADA DIAMANTINA NATIONAL PARK, BRAZIL


Abstract

This work aims to provide regionalized information on the non-acarine arachnids inhabiting the Brazilian Chapada Diamantina National Park (PARNA-CD), and its surroundings, to support studies for protecting endemic species and preventing human accidents by these animals. We used registers of five arachnological collections covering 36 years, validated by the world catalogs of each order. We found 67 arachnid species from five orders, 42 families, in the six municipalities surrounding PARNA-CD. Araneae (54 species) and Scorpiones (ten species) were the most representative orders. We found no records of the other orders except for Pseudoscorpiones (two species) and Amblypygi (one species). Only one spider species (Tmesiphantes hypogeus), and two scorpions (Troglorhopalurus lacrau and T. translucidus) were assessed on the IUCN criteria for conservation. Twenty-six species are endemic to Brazil, of which five have no records in any location other than PARNA-CD. At least one medically important species was encountered in each municipality, from the genera: Latrodectus, Loxosceles, Phoneutria, and Tityus. Given the recent rate of human-mediated changes (undue land-use) where several Brazilian caatinga areas were exposed, endemic species from this list should be the priority target for long-term ecological and behavioral studies.

Andrade de Sá, J., Kobler Brazil, T., Emmanuel Soares Barreto, D. and Maria Lira-da-Silva, R. (2025) “FIRST CHECKLIST OF THE NON-ACARINE ARACHNIDS (CHELICERATA: ARACHNIDA) OF THE CHAPADA DIAMANTINA NATIONAL PARK, BRAZIL”, Boletín de la Sociedad Zoológica del Uruguay, 34(1), p. e34.1.5. doi: 10.26462/34.1.5.