Acanthogonatus recinto

Acanthogonatus recinto
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Mygalomorphae
Family:	Pycnothelidae
Genus:	Acanthogonatus
Species:	A. recinto
Binomial name
Acanthogonatus recinto Goloboff, 1995

Acanthogonatus recinto is a mygalomorph spider of Chile, its name arising from its type locality: Recinto, Nuble, Region VIII, Chile. ^[1] Females are distinguished from those of A. franki by the spermathecae, having a more rounded and differentiated fundus and its basal portion extended internally, compared to those of A. peniasco with a narrower, longer and less sclerotized ducts; and from other species in the genus by having 1-1-1 P spines on its patella IV. Males differ from those of A.franki in the unique winglike projection at the base of the embolus.

Description

• Male: total length 12.95 millimetres (0.510 in); cephalothorax length 5.80 millimetres (0.228 in), width 4.90 millimetres (0.193 in); cephalic region length 3.70 millimetres (0.146 in), width 3.05 millimetres (0.120 in); medial ocular quadrangle length (OQ) 0.52 millimetres (0.020 in), width 1 millimetre (0.039 in); labium length 0.42 millimetres (0.017 in), width 0.85 millimetres (0.033 in); sternum length 2.92 millimetres (0.115 in), width 2.32 millimetres (0.091 in). Its labium possesses 3 cuspules. A well-developed serrula is present; its teeth are widely spaced. Its sternal sigilla is small, oval and shallow; its sternum is rebordered. Chelicerae: rastellum is weak. A small, ventrally protruding cheliceral tumescence is present. Its leg I and tibia are cylindrical and straight, with no apophysis; its metatarsus is also straight. Its cephalothorax, legs, and palpi are a reddish-brown colour, while its abdomen is a light yellowish brown, with numerous dorsal mottles and a darker chevron. ^[1]
• Female: total length 19.2 millimetres (0.76 in); cephalothorax length 6.9 millimetres (0.27 in), width 5.5 millimetres (0.22 in); cephalic region length 4.45 millimetres (0.175 in), width 3.7 millimetres (0.15 in); fovea width 0.7 millimetres (0.028 in); (OQ) 0.62 millimetres (0.024 in), width 1.14 millimetres (0.045 in); labium length 0.70 millimetres (0.028 in), width 1.17 millimetres (0.046 in); sternum length 3.52 millimetres (0.139 in), width 3.07 millimetres (0.121 in). Its cephalic region is of medium convexity; its fovea shaped straight to procurved, with a small posterior notch. Its labium possesses 4 cuspules. A well-developed serrula is present. Its sternal sigilla is small, oval and shallow; its sternum is rebordered. Chelicerae: rastellum is weak. Color similar to male. ^[1]

Distribution

It is found in only a few localities in Regions VIII and IX in Chile.

References

1. 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).

External links

• "Acanthogonatus recinto". Integrated Taxonomic Information System.
• ADW entry
• "Acanthogonatus recinto". The Encyclopedia of Life .
• ZipcodeZoo entry