Tetraconcha fenestrata Karsch, 1890

Massa, Bruno, 2017, Revision of the tropical African genus Tetraconcha (Orthoptera: Tettigoniidae: Phaneropterinae) with the description of ten new species, Journal of Orthoptera Research 26 (2), pp. 211-232 : 213

Tetraconcha fenestrata Karsch, 1890 Figs 15-18, 69, 81

Karsch, 1890a. Entom. Nachricht. 16: 62.

Type locality.

-Cameroon (MfN).

Material examined.-Cameroon (♂ holotype) (MfN); Equatorial Guinea, Fernando Póo, Basile 1901 (1♂); Cameroon, Mukonje Farm, R. Rohde (1♂, 1♀) (MSNG); Equatorial Guinea, Fernando Póo (1♂); Cameroon (1♂) (MNCN); Ivory Coast, Okem (1♂); Cameroon, Mundame (1♂, 1♀) (NMW); Cameroon, Mukonje Farm, R. Rohde (7♀); Cameroon (1♂); Cameroon, Bonamo (1♂) (RBINS).

Remarks.

- T. fenestrata is the type species of the genus Tetraconcha . The ratio length/width tegmina in males is between 3.5 and 3.6, in females it is between 2.6 and 3.4 ( Bolívar 1906; present study). Kirby (1906) cited it from Ivory Coast, Bolívar (1906) described the female. Griffini (1906) cited 1♂ from Fernando Póo, and later Griffini (1908) described the female and recorded 3♂ and 8♀ from Cameroon. Sjöstedt (1912) recorded 3♀ from Buea (Cameroon).

The name fenestrata refers to the wide translucent area (from Latin fenestra = window) on the tegmina. The stridulatory area of left and right tegmina are shown in Fig. 15; stridulatory file arched and interrupted before the proximal end by a bulge, followed by ca. 15 teeth decreasing in size, distal part (including also the bulge) is composed of ca. 35 widely spaced teeth (Fig. 16), subgenital plate with a narrow concavity, cerci stout and incurved at the tip (Figs 17-18).

Distribution.

- T. fenestrata covers Central and West Africa (it is known from Cameroon, Ivory Coast and Equatorial Guinea).