Euathlus Explained

Euathlus is a genus of South American tarantulas that was first described by Anton Ausserer in 1875.^[1] These spiders are medium sized and are usually found in high elevations in the Andes.^[2] It is a senior synonym of Paraphysa, and was formerly considered a senior synonym of Brachypelma,^[3] but this was later rejected.^[4]

Diagnosis

Males own a palpal bulb with two prolateral keels, with the tip curved retrolaterally. The tibial apophyses has retrolateral spines and a spine on the retrolateral branch which almost reached the apex. And a urticating patch in the center of the opisthosoma, which own mainly type 3 and 4 urticating hairs. Females also can be distinguished by two 4 sided spermathecal receptacles, with sphere like chambers.

Species

it contains fourteen species, found in Argentina, Chile and Peru:^[5]

• Euathlus affinis (Nicolet, 1849) – Chile
• Euathlus antai Perafán & Pérez-Miles, 2014 – Chile
• Euathlus atacama Perafán & Pérez-Miles, 2014 – Chile
• Euathlus condorito Perafán & Pérez-Miles, 2014 – Chile
• Euathlus diamante Ferretti, 2015 – Argentina
• Euathlus grismadoi Ríos-Tamayo, 2020 – Argentina
• Euathlus manicata (Simon, 1892) – Chile
• Euathlus mauryi Ríos-Tamayo, 2020 – Argentina
• Euathlus pampa Ríos-Tamayo, 2020 – Argentina
• Euathlus parvulus (Pocock, 1903) – Chile
• Euathlus sagei Ferretti, 2015 – Argentina
• Euathlus tenebrarum Ferretti, 2015 – Argentina
• Euathlus truculentus L. Koch, 1875 (type) – Chile, Argentina
• Euathlus vanessae Quispe-Colca & Ferretti, 2021 – Peru

In synonymy

• E. phryxotrichoides (Strand, 1907) = Euathlus truculentus

• Euathlus roseus (Guérin, 1838) - Chile

Transferred to other genera

See also

• List of Theraphosidae species

Notes and References

1. Ausserer. A.. 1875. Zweiter Beitrag zur Kenntniss der Arachniden-Familie der Territelariae Thorell (Mygalidae Autor). Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien. 125–206. 25. Anton_Ausserer.
2. Quispe-Colca . Oscar M. . Ferretti . Nelson . 2021-11-01 . First record of the tarantula genus Euathlus (Araneae: Theraphosidae: Theraphosinae) in Peru, with the description of a threatened new species . Iheringia. Série Zoologia . en . 111 . 10.1590/1678-4766e2021026 . 240469531 . 0073-4721. free . 11336/150361 . free .
3. Raven. R. J.. 1985. The spider infraorder Mygalomorphae (Araneae): Cladistics and systematics. Bulletin of the American Museum of Natural History. 182. 150. Robert_Raven.
4. Schmidt. G.. 1991. Revision der Gattung Megaphobema (Araneida: Theraphosidae: Theraphosinae). Arachnologischer Anzeiger. 13. 12. Günter_Schmidt_(arachnologist).
5. Gloor. Daniel. Nentwig. Wolfgang. Blick. Theo. Kropf. Christian. 2021. Gen. Euathlus Ausserer, 1875. Natural History Museum Bern. 10.24436/2. World Spider Catalog Version 22.5. 11 November 2021.