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Acanthogonatus tolhuaca : ウィキペディア英語版 | Acanthogonatus tolhuaca
''Acanthogonatus tolhuaca'' is a mygalomorph spider of Chile, named after its type locality: Tolhuaca, Malleco, Region IX (de la Araucania).〔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).〕 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. ==Description==
*Female: total length ; cephalothorax length , width ; cephalic region length , width ; fovea width ; medial ocular quadrangle length , width ; labium length , width ; sternum length , width . 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.〔
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