On three newEuathlustarantulas from Argentina and cladistic analysis of the genus

Abstract

Three unknown species of Euathlus Ausserer 1875 (Araneae: Theraphosidae) are recognized and formally described. Euathlus diamante Ferretti sp. nov., E. sagei Ferretti sp. nov., and E. tenebrarum Ferretti sp. nov. are described from the Mendoza and Neuque ´n provinces of western Argentina. The cladistic analysis showed Euathlus as monophyletic supported by the following synapomorphies: i) male tibial apophysis with fused branches bases; ii) presence of a ventral spine on retrolateral branch of male tibial apophysis; iii) sternum longer than wide. According to this cladistics analysis, a tree topology of (Homoeomma uruguayense (Mello-Leita ˜o 1946) (Plesiopelma longisternale (Schiapelli & Gerschman 1942) (Grammostola anthracina (C.L. Koch 1842) (Phrixotrichus scrofa (Molina 1788) (E. tenebrarum sp. nov. (E. truculentus L. Koch 1875, E. sagei sp. nov. ((E. parvulus (Pocock 1903) (E. condorito Perafa ´n & Pe ´rez-Miles 2014, E. manicata (Simon 1892), E. atacama Perafa ´n & Pe ´rez-Miles 2014)) (E. antai Perafa ´n & Pe ´rez-Miles 2014, E. diamante sp. nov.)))))))) is reported.

Conservation biogeography and diversity of tarantulas in Argentina

“…Similarly, Euathlus sagei, E. tenebrarum, Phrixotrichus pucara, and P. vulpinus (Karsch 1880) show strong support for the endemicity of the areas in the Valdivian Temperate Forest, Patagonian Steppe, and the Low Monte. These species are characteristics representatives of the Andean Patagonian Forests in southwestern Argentina, but both genera have their highest diversity in Chile (Ferretti 2015). Using a grid size of 2° with ll of 25, we identi ed an area of endemism in the Dry Chaco region that was not recovered with other parameters.…”

“…Despite an increase in taxonomic and biological knowledge of Argentinean tarantulas, information regarding their distribution patterns and conservation status remains scarce (Copperi et al 2011;Ferretti 2015;Schwerdt et al 2019). This study aims to i) develop an integrative biogeographic approach to tarantula conservation by evaluating multispecies distribution patterns studying species richness, and identifying areas of endemism; ii) evaluate these patterns in relation to existing protected areas and proposing potential PCAs for tarantulas.…”

The Neotropical genusHapalotremusSimon, 1903 (Araneae: Theraphosidae), with the description of seven new species and the highest altitude record for the family

“…(up to 3200 m a.s.l.) (Perafán and Pérez-Miles 2014;Ferretti 2015) and recently described species of Bistriopelma Kaderka, 2015 with elevation records up to 4398 m a.s.l. (Kaderka 2015).…”

Bistriopelma fabianae, a new species of tarantula (Araneae: Theraphosidae: Theraphosinae) in a Queñua forest from southern Peru

“…Theraphosidae is the most diverse family of mygalomorph spiders, with 984 described species known to date (World Spider Catalog 2020), however, theraphosids are also known for their great morphological homogeneity which makes difficult the diagnosis and identification of species (Raven 1985;Pérez-Miles et al 1996;Bertani 2000;Perafán & Pérez-Miles 2014;Ferretti 2015;Lapinski et al 2018).…”