Tapinauchenius Ausserer, 1871

Huesser, Martin, 2018, A first phylogenetic analysis reveals a new arboreal tarantula genus from South America with description of a new species and two new species of Tapinauchenius Ausserer, 1871 (Araneae, Mygalomorphae, Theraphosidae), ZooKeys 784, pp. 59-93 : 59

Tapinauchenius Ausserer, 1871

Type species.

Tapinauchenius plumipes (C. L. Koch, 1842).

Species included.

Tapinauchenius brunneus Schmidt, 1995, Tapinauchenius cupreus Schmidt & Bauer, 1996, Tapinauchenius latipes L. Koch, 1875, Tapinauchenius sanctivincenti (Walckenaer, 1837), Tapinauchenius violaceus ( Mello-Leitão, 1930), Tapinauchenius rasti sp. n., Tapinauchenius polybotes sp. n.

Diagnosis.

Differs from all other Psalmopoeinae genera by the lack of a stridulatory organ palpal coxa, prolateral and from Ephebopus by the absence of urticating setae on palpal femora.

Description.

Carapace longer than wide with cephalic region slightly raised and convex. Striae well marked, fovea deep and straight. Chelicerae without rastellum. Eye tubercle distinct and wider than long, anterior eye row is straight and clypeus absent. Labium subquadrate, slightly wider than long, with numerous (100-300) cuspules concentrated on the anterior half. Maxillae subrectangular with anterior lobe distinctly produced into a conical form, with the inner angle bearing numerous cuspules (more than 100). Sternum longer than wide with posterior sigillae submarginal. STC with median row of a few small teeth. All leg tarsi and anterior metatarsi fully scopulated, Mt III scopulated at distal half and Mt IV scopulated only at distal third. Scopulae on anterior tarsi and metatarsi extended laterally resulting in a spatulate appearance. Femur IV without retrolateral scopula.

Remarks.

Species of the genus Tapinauchenius do not show any ontogenetic pattern change. Juveniles are uniformly coloured in a dark-grey with faint bluish tone (Figure 15a).