''Chaco tecka'' is a species of
mygalomorph
The Mygalomorphae, or mygalomorphs, are an infraorder of spiders, and comprise one of three major groups of living spiders with over 3000 species, found on all continents except Antarctica. Many members are known as trapdoor spiders due to the ...
spiders of Argentina, named after its type locality: Rio Tecka,
Chubut Chubut may refer to:
* Chubut Province, Argentina
* Chubut River in the Chubut Province
* Chubut steamer duck
The Chubut steamer duck or white-headed flightless steamer duck (''Tachyeres leucocephalus'') is a flightless duck endemic to Argenti ...
,
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, t ...
.
[Goloboff, Pablo A. "A revision of the South American spiders of the family Nemesiidae (Araneae, Mygalomorphae). Part 1, Species from Peru, Chile, Argentina, and Uruguay. Bulletin of the AMNH; no. 224." (1995).] Females can be distinguished from those of other species of ''
Chaco
Chaco may refer to:
Places in South America
* Chaco Basin, spanning Argentina, Bolivia, and Paraguay
* Chaco Department, a historical department in Paraguay and proposed in Bolivia
* Chaco Province, a province in the northeastern part of Argenti ...
'' by the strong and numerous spines on metatarsus IV and by the presence of pseudopreening combs on metatarsi III and IV. From ''
C. patagonica'' and ''
C. sanjuanina'', females differ also in the patterned cephalothorax and legs.
Description
The female has a total length of ; a cephalothorax length of and width of ; a cephalic region length of and width of ; a
fovea
Fovea () (Latin for "pit"; plural foveae ) is a term in anatomy. It refers to a pit or depression in a structure.
Human anatomy
* Fovea centralis of the retina
* Fovea buccalis or Dimple
* Fovea of the femoral head
*Trochlear fovea of the f ...
width of ; an OQ length of and width of ; a labium length of and width of ; and a sternum length of and width of . Its cephalic region is convex; the fovea is slightly procurved. The labium possesses no cuspules. A serrula is absent; the sternal sigilla is small and shallow; the sternum is rebordered. Its cephalothorax is yellowish brown; the legs are of the same colour, but lighter; it carries darker spots on its cephalic region, on the retrolateral apex of the femora, the middle of the patellae, and the base of the tibiae.
See also
*
Spider anatomy
The anatomy of spiders includes many characteristics shared with other arachnids. These characteristics include bodies divided into two tagmata (sections or segments), eight jointed legs, no wings or antennae, the presence of chelicerae and pe ...
*
List of Nemesiidae species
This page lists all described species of the spider family Nemesiidae accepted by the World Spider Catalog :
A ''Amblyocarenum''
''Amblyocarenum'' Simon, 1892
* '' A. doleschalli'' (Ausserer, 1871) — Italy (mainland, Sicily)
* '' A. nuragicum ...
References
External links
ADW entry
Nemesiidae
Spiders of Argentina
Spiders described in 1995
{{Nemesiidae-stub