''Acanthogonatus quilocura'' is a mygalomorph spider of

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 ...

, its name referring to the seemingly unending number of species within this genus (“locura” meaning ''madness'' in Spanish).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). Males are similar to those of '' A. tacuariensis'' (from

Uruguay Uruguay (; ), officially the Oriental Republic of Uruguay ( es, República Oriental del Uruguay), is a country in South America. It shares borders with Argentina to its west and southwest and Brazil to its north and northeast; while bordering ...

), from which are distinguished by a curved metatarsus I; female spermathecae are characteristic in having a strongly bent duct arising from the base of a blunt basal dome.

Description

*Female: total length ;

cephalothorax The cephalothorax, also called prosoma in some groups, is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind. (The terms ''prosoma'' and ''opisthosoma'' are equivalent to ''cepha ...

length , width ; cephalic region length , width ;

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 fr ...

width ; medial ocular quadrangle (OQ) length , width ; labium length , width ; sternum length , width . Its cephalic region is convex, with its fovea slightly procurved, with a small posterior notch. Its labium possesses 3 cuspules. A well-developed serrula is present. Its sternal sigilla is small and oval, connected to the sternal margin by a depression; the sternum is slightly rebordered. Chelicerae: the rastellum is formed by thickened, attenuate

setae In biology, setae (singular seta ; from the Latin word for "bristle") are any of a number of different bristle- or hair-like structures on living organisms. Animal setae Protostomes Annelid setae are stiff bristles present on the body. Th ...

. Spermathecae have their lateral duct strongly bent. Color as in male. *Male: total length ; cephalothorax length , width , cephalic region length , width ; OQ length , width ; labium length , width ; sternum length , width . Its labium possesses 1 cuspule. Its serrula is well developed. Its sternal sigilla is elongate, with an outer side depressed, forming a connection with the sternal margin, which is rebordered. Chelicerae: rastellum is absent. Cheliceral tumescence small and pallid, ventrally protruding. Leg I and its metatarsus are curved downwards. The entire spider is a golden brown colour, while its abdomen is yellowish golden-brown with darker brown spots.

Distribution

This species appears to be restricted to

Region Metropolitana Santiago Metropolitan Region ( es, link=no, Región Metropolitana de Santiago) is one of Chile's 16 first-order administrative divisions. It is the country's only landlocked administrative region and contains the nation's capital, Santiago. Most ...

. It has been collected from burrows similar to '' A. huaquen''.

References

External links

*
ADW entry
* {{Taxonbar, from=Q2355018 Pycnothelidae Spiders of South America Spiders described in 1995 Endemic fauna of Chile