Acanthogonatus nahuelbuta explained
Acanthogonatus nahuelbuta is a mygalomorph spider of Chile, named after its type locality: Piedra del Águila, Parque Nacional Nahuel-Buta, Malleco.[1] Males differ from A. patagallina by having the basal portion of the bulb less rounded and the basal loop of the bulbal duct less sinuous; and from those of A. hualpen by the differently shaped embolus and the palpal tibia with the apical two-thirds (instead of its apical one-third) tapering gradually and having thickened setae.
Description
- Male: total length 13.38mm; cephalothorax length 5.26mm, width 3.34mm; cephalic region length 4.52mm, width 2.72mm; medial ocular quadrangle (OQ) length 0.63mm, width 1.11mm; fovea width 0.67mm; labium length 0.51mm, width 1.03mm; sternum length 2.97mm, width 2.44mm. Its labium possesses no cuspules. A serrula is present. Its sternal sigilla is small, oval and submarginal, while its sternum is strongly rebordered. Chelicerae: rastellum is absent. A small, pallid and protruding cheliceral tumescence is present. Colour as in female.
- Female: total length 17.54mm; cephalothorax length 6.19mm, width 5.29mm; cephalic region length 4.14mm, width 3.84mm; fovea width 0.76mm; OQ length 0.61mm, width 1.25mm; labium length 0.67mm, width 1.19mm;sternum length 1.75mm, width 1.55mm. Its cephalic region is strongly convex, with a sinuous fovea with short posterior medial notch. Its labium possesses 2 cuspules. A serrula is present. Sternal sigilla is small and oval, while its sternum is rebordered. Chelicerae: rastellum is absent. Its cephalothorax and legs are a reddish-brown colour, while its abdomen is yellowish and densely mottled with dark brown.
Distribution
Provinces of Bío-Bío and Malleco, in Region VIII, Chile.
External links
Notes and References
- 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).
