Tetraconcha omonomai, Massa, Bruno, 2017

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 : 219-220

Tetraconcha omonomai sp. n. Figs 57-60, 93

Material examined and depository.

-Central African Republic, N’Doki, shore of Lake 1, 13-14.II.2012, 02°28' 51.0N 016°13' 04.5E (UV trap), P. Moretto (1♂ holotype) (MSNG); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 15.II.2012 (light trap), P. Annoyer (1♂ paratype); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 24.II.2012 (light trap), P. Annoyer (1♂ paratype) (BMPC); Central African Republic, Dzanga-N’Doki National Park, Sangha National Park, camp 3, 5.II.2005, P. Annoyer (1♂ paratype); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 19.II.2012 (light trap), P. Annoyer (1♂ paratype); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 1.II.2012, 16.II.2012 (light trap), P. Annoyer (2♂ paratypes) (PACT).

Color.

-Head and pronotum yellow-green, abdomen yellow-brown, tegmina with a black spot at their base, green.

Description.

-Males. Head and antennae: Fastigium of vertex narrow, sulcate above, separated from fastigium of frons. Eyes rounded, well projecting. Antennae long. Legs: Fore coxae armed with a small spine. Fore tibiae furrowed dorsally, distinctly widening above tympanum, conchate on both sides. Fore femora armed on inner ventral side with 4-5 spines, fore tibiae with 4-5 spines + 1 spur on inner and on outer ventral sides, 3 spines + 1 spur on outer dorsal side, mid femora armed with 6-7 spines on outer ventral side, mid tibiae with 7-9 spines on outer and inner ventral sides + 1 spur on each side, and 4 spines + 1 spur on inner dorsal side, hind femora armed with 6-7 small spines on outer ventral side, hind tibiae with many spines on ventral and dorsal sides + 3 spurs on each side. Thorax: Pronotum narrowing anteriorly, flat above, anterior margin incurved, posterior margin rounded, humeral sinus well developed, lobes of pronotum rounded. Tegmina narrow with rounded apices. Compared to other species of the " smaragdina -group" cubital area between cubitus of the left tegmen narrower (Table 1). Wings longer than tegmina. Stridulatory area of left and right tegmina shown in Fig. 57, veinlets of left tegmen in Fig. 93; stridulatory file arched and composed by ca. 30 very dense and evenly spaced teeth in the distal part (ca. ¼ of the length), ca. 15 widely spaced teeth in the central part (ca. 2/4 of the length), and ca. 10 dense and evenly spaced teeth in the proximal part (ca. ¼ of the length) (Fig. 58). Abdomen: Subgenital plate long with a wide concavity, cerci slender, fairly straight and incurved at the tip (Figs 59-60).

Female. Unknown.

Measurements.

-Cf. Tables 1 and 2.

Diagnosis.

- T. omonomai sp. n. is characterised mainly by the narrow cubital area of the left tegmen, its stridulatory area of the left and right tegmina (Fig. 57), its peculiar stridulatory file (Fig. 58), veinlets of tegmina (Fig. 93), and long subgenital plate with wide concavity (Figs 59-60).

Etymology.

-This species is named after Dieu béni Bongola Omonoma, local collector of insects within the forest during the expedition Sangha 2012.

Distribution.

-Known only from Central African Republic.