Tetraconcha loubesi, 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 : 217

Tetraconcha loubesi sp. n. Figs 37-40, 74, 89

Material examined and depository.

-Central African Republic, N’Doki, shore of Lake 1, 20-23.II.2012, 02°28' 51.0N, 016°13' 04.5E (UV trap), P. Moretto (1♂ holotype) (MSNG); same data 4-5.II.2012, 13-14.II.2012, 20-23.II.2012 (UV trap), P. Moretto (5♂ paratypes) (BMPC); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 25.XI.2010, 14.II.2012 (light trap), P. Annoyer (2♂ paratypes) (PACT).

Color.

-Head and pronotum yellow-green, abdomen yellow-brown, cerci yellow, tegmina with a black spot at their base, green with black spots on back veinlets, brownish in the stridulatory area.

Description.

-Males. Head and antennae: Fastigium of vertex narrow, sulcate above, separated from fastigium of frons. Eyes rounded, well projecting. Antennae longer than body. 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 9-10 spines, fore tibiae with 6-7 spines + 1 spur on inner side and 3-4 small spines on outer ventral side, 2 spines + 1 spur on outer dorsal side, mid femora armed with 7-8 spines on outer ventral side, mid tibiae with 15-17 spines on outer and inner ventral sides + 1 spur on each side, and 3 spines + 1 spur on inner dorsal side, hind femora armed with 5-6 small spines on outer and 1-2 on inner ventral sides, 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. Wings longer than tegmina. Stridulatory area of left and right tegmina shown in Fig. 37, veinlets of left tegmen in Fig. 89; stridulatory file arched and composed of ca. 100 very dense and evenly spaced teeth plus 7-8 widely spaced teeth in the distal part, followed by ca. 6-7 very small and little raised teeth (Fig. 38). Abdomen: Subgenital plate with a deep concavity, cerci stout at their base and incurved (Figs 39-40).

Female: unknown.

Measurements.

-Cf. Tables 1 and 2.

Diagnosis.

- T. loubesi is very similar to T. smaragdina , from which it may be separated by a different stridulatory area of the left and right tegmen (compare Figs 32 and 37) and the stridulatory file (compare Figs 34 and 38). It also differs by veinlets on tegmina (compare Figs 88 and 89) and by the male subgenital plate ending in a short apical part with a deep concavity (compare Figs 36 and 40). Cerci are stout at their base (Figs 39-40).

Etymology.

-This species is named after Matias Loubes, President of the Association Tout Là-Haut, responsible for the at light captures within the forest canopy during the expedition Sangha 2012 and the expedition to Taï Forest in 2017.

Distribution.

-Known only from Central African Republic.