Tetraconcha annoyeri, 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 : 218-219

Tetraconcha annoyeri sp. n. Figs 49-52, 91, 100

Material examined and depository.

-Central African Republic, N’Doki, shore of Lake 1, 11-12.II.2012, 02°28' 51.0N 016°13' 04.5E (UV trap), P. Moretto (1♂ holotype) (MSNG); same locality 20-23.II.2012, P. Moretto (1♂ paratype); same locality 24-25.II.2012, P. Moretto (1♂ para type); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 21.II.2012 (light trap), P. Annoyer (1♂ paratype) (BMPC); Central African Republic, Dzanga-N’Doki National Park, Sangha, camp 3, 6.II.2005, P. Annoyer (1♂ paratype); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 1, 29.XI.2010, 11.II.2012 (light trap), P. Annoyer (2♂ paratypes); Central African Republic, Dzanga-N’Doki National Park, N’Doki, Lake 2, 24.II.2012 (light trap), P. Annoyer (1♂ paratype) (PACT).

Color.

-The whole body yellowish, tegmina with a black spot at the base, many yellowish or whitish spots between veinlets; black spots along the veinlets of posterior area of tegmina; ventral side of hind femora generally brownish.

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 7-8 spines, fore tibiae with 5-6 spines + 1 spur on inner and on outer ventral sides, 3 spines + 1 spur on outer dorsal side, mid femora armed with 8-9 spines on outer ventral side, mid tibiae with 15-16 spines on outer and inner ventral sides + 1 spur on each side, and 4-5 spines + 1 spur on inner dorsal side, hind femora armed with 6 small spines on outer and 3 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. 49, veinlets of left tegmen in Fig. 91; stridulatory file arched and composed by ca. 100 very dense and evenly spaced teeth in the proximal part (ca. 1/3 of the length), and 15 widely spaced teeth in the distal part (ca. 2/3 of the length) (Fig. 50). Abdomen: Subgenital plate short with a wide concavity, cerci slender and incurved (Figs 51-52).

Female. Unknown.

Measurements.

-Cf. Tables 1 and 2.

Diagnosis.

- T. annoyeri sp. n. is characterised mainly by the presence of whitish-yellow spots on tegmina (Fig. 91), its stridulatory area of left and right tegmina (Fig. 49), its peculiar stridulatory file (Fig. 50) and its subgenital plate (Figs 51-52).

Etymology.

-This species is named after Philippe Annoyer, President of the Association Insectes du Monde and organizer of the expedition Sangha 2012; he also collected many interesting Orthoptera during the expedition to the Taï Forest (Ivory Coast) in 2017.

Distribution.

-Known only from Central African Republic.