Thoracophoracarus, K. Viets, 1914

Gerecke, Reinhard, 2009, Revisional studies on Thoracophoracarus K. Viets, 1914 (Arachnida, Acari, Hydrachnidia, Arrenuridae), Zoosystema 31 (1), pp. 127-145 : 133

Thoracophoracarus (s.s.) gibberosus K. Viets, 1962

Thoracophoracarus gibberosus K. Viets, 1962: 409 , figs 1-9.

TYPE MATERIAL. — Holotype: South Africa, Eastern Cape Province, Kaaimans river FRW. 154, 10.III.1960, Agnew leg., 2595, ♂ ( SMF 54995).

Paratypes:same site and date as holotype, ♂ ( SMF 54994) ; ♀ ( SMF 55020) (“ allotypus ”) ; ♀ ( SMF 55019) .

REMARKS

The original description is very carefully done and detailed. This species is similar to others known from Africa in the presence of symmetricallyarranged dorsal humps (in males most visible near the antenniformia), but completely different in the construction of the genital field (in both sexes gonopore large, flanked by rounded acetabular fields not extending to the body flanks, plesiotypically located immediately posterior to coxal field and directed ventrally). As in three of the preceeding species, P-2 has only 2, rarely 3, mediodistal setae. In both sexes, the anteroventral extension of P-4 is equally rounded, not pointed. Males of T. gibberosus are distinct due to the development of a large, subrectangular cauda separated from the remainder of the idiosoma by a narrowed neck.