''Euathlus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of South American

tarantulas Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. , 1,040 species have been identified, with 156 genera. The term "tarantula" is usually used to describe members of the family Theraphosidae, although ...

that was first described by Anton Ausserer in 1875. These spiders are medium sized and are usually found in high elevations in the

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

. It is a senior synonym of ''Paraphysa'', and was formerly considered a senior synonym of '' Brachypelma'', but this was later rejected.

Diagnosis

Males own a

palpal bulb The two palpal bulbs – also known as palpal organs and genital bulbs – are the copulatory organs of a male spider. They are borne on the last segment of the pedipalps (the front "limbs" of a spider), giving the spider an appearance often desc ...

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 The opisthosoma is the posterior part of the body in some arthropods, behind the prosoma ( cephalothorax). It is a distinctive feature of the subphylum Chelicerata (arachnids, horseshoe crabs and others). Although it is similar in most respects to ...

, which own mainly type 3 and 4

urticating hair Urticating hairs or urticating bristles are one of the primary defense mechanisms used by numerous plants, almost all New World tarantulas, and various lepidopteran caterpillars. ''Urtica'' is Latin for "nettle" (stinging nettles are in the genu ...

s. Females also can be distinguished by two 4 sided

spermatheca The spermatheca (pronounced plural: spermathecae ), also called receptaculum seminis (plural: receptacula seminis), is an organ of the female reproductive tract in insects, e.g. ants, bees, some molluscs, oligochaeta worms and certain other in ...

l receptacles, with sphere like chambers.

Species

it contains fourteen species, found in

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

and

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy f ...

: *'' Euathlus affinis'' (Nicolet, 1849) –

*'' 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 –

*'' Euathlus grismadoi'' Ríos-Tamayo, 2020 – Argentina *'' Euathlus manicata'' (

Simon Simon may refer to: People * Simon (given name), including a list of people and fictional characters with the given name Simon * Simon (surname), including a list of people with the surname Simon * Eugène Simon, French naturalist and the genus ...

, 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 , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = National seal , national_motto = "Firm and Happy f ...

In synonymy

*''E. phryxotrichoides'' (Strand, 1907) = '' Euathlus truculentus''

Nomen dubium

* ''Euathlus roseus'' (Guérin, 1838) - Chile

Transferred to other genera

References