Acanthogonatus tolhuaca

Acanthogonatus tolhuaca is a mygalomorph spider of Chile, named after its type locality: Tolhuaca, Malleco, Region IX (de la Araucania).[1] This species differs from A. mulchen in its wider sternum, smaller size, and the spermathecae having a more pronounced notch; from A. brunneus, it differs in the uniformly coloured abdomen.

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

Description
  • Female: total length 23.1 millimetres (0.91 in); cephalothorax length 9.4 millimetres (0.37 in), width 7.7 millimetres (0.30 in); cephalic region length 5.8 millimetres (0.23 in), width 5.6 millimetres (0.22 in); fovea width 0.95 millimetres (0.037 in); medial ocular quadrangle length 0.72 millimetres (0.028 in), width 1.57 millimetres (0.062 in); labium length 0.82 millimetres (0.032 in), width 1.57 millimetres (0.062 in); sternum length 4.95 millimetres (0.195 in), width 3.82 millimetres (0.150 in). Its cephalic region is wide but low, while its fovea is slightly procurved, with a small posterior notch. Its labium possesses no cuspules. A serrula is present on the anterior face of the lobe. Its sternal sigilla is small and oval (less elongated than A. Mulchen). Chelicerae: rastellum is absent. The spermathecal notch is more pronounced than in A. Mulchen. The entire spider is a reddish-blackish brown colour, while the abdomen has a paler anterodorsal spot.[1]

Distribution

Only in Malleco Province.

See also

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).
  • "Acanthogonatus tolhuaca". Integrated Taxonomic Information System.
  • ADW entry
  • "Acanthogonatus mulchen" at the Encyclopedia of Life


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