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 arachnid in Tasik Chini Biosphere Reserve, Pahang, Malaysia with notes on important tarantula species

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First checklist of arachnid in Tasik Chini Biosphere Reserve, Pahang, Malaysia with notes on important tarantula species


Abstract 

A survey of arachnid species in Tasik Chini was conducted from 22nd to 26th of February 2022. The Visual Encounter Survey (VES) method was employed as the primary approach for arachnid detection. The outcomes of this study provided the first documented literature presenting a checklist of arachnid species identified in the Tasik Chini region. This study records total of 33 arachnid species, encompassing the Araneae, Scorpions, Opiliones, and Thelyphonida families. Notably, two intriguing spider species, namely Damarchus sp. “Chini” (Tube trapdoor spider) and Psednocnemis brachyramosa (Malaysian Blue Femur Tarantula), were discovered during the survey. This marks the initial confirmation of the presence of P. brachyramosa in Pahang, as previous records solely report its occurrence in Gunung Ledang, Johor. To further unravel the distinctive arachnid assemblages within this Man and Biosphere Reserve, future investigations should concentrate on conducting intensive sampling of arachnids in the broader Tasik Chini Basin.