Turanogryllus zamakoensis Um Nyobe, Kekeunou & Bilong Bilong sp. nov.

Material examined. -

Holotype: CAMEROON • ♂; Center Region, Zamakoe; 3°33'816"N, 11°31'913"E; 14 February 2015; in crops field, quadrat trap; P. Um Nyobe & team leg.; MNHN-EO-ENSIF1749 . Allotype:- CAMEROON • ♀; Center Region, Zamakoe; 3°33'816"N, 11°31'913"E; 21 March 2015; in crops field, quadrat trap; P. Um Nyobe & team leg.; MNHN-EO-ENSIF1713 .

Etymology. -

The species epithet Turanogryllus zamakoensis refers to the type locality.

Diagnosis. -

Turanogryllus zamakoensis sp. nov. is distinguished from congeners by light brown coloration, male genitalia provided with a large dorsal lobe of ectoparamere, and with microptereous FWs; the other species are either brachyptereous or macroptereous. In addition, it has only one outer tympanum while the other species have tympana on external and internal side.

Description. -

(Figs 2, 3) Male. Size average, brown, lighter than other species. Head dark brown with four pale stripes on occiput, not extending over vertex (Fig. 2A); cheeks pale (Fig. 2B); ocelli large; face entirely pale below median ocellus and below level of antennae (Fig. 2C). Pronotum covered with very fine pubescence, without bristles; dorsum dark brown, muscle attachment plates pale brown (Fig. 2A); lateral lobes ivory, becoming dark brown at upper margin (Fig. 2B). TI and TII ivory-colored; TI with a large outer tympanum. Hindlegs: f FIII pale brown with faintly darker oblique stripes on outer surface; darker around knees, especially on inner surface; TIII pale brown with 6 inner and 7 outer subapical spurs. FWs with square base, reaching abdomen mid-length; its length to pronotal length ratio ca. 2.5; dorsum brown; lateral field pale, dark brown between upper three veins. Stridulatory file with 156 teeth; harp with 3 oblique veins; mirror oval, with one dividing vein (Fig. 2E). Hind wings short, hidden by FWs. Abdomen dorsum dark brown; venter pale; cerci pale. Male genitalia (Fig. 3): lateral lobes of epiphallus with styli at their posterior extremities, and these styli are provided with bristles; dorsal lobes of ectoparameres lamelliform, curved dorsally in its posterior half; ventral lobes of ectoparameres digitiform, sigmoidally curved; dorsal lobes of ectoparameres enlarged above ventral lobes of ectoparameres.

Female. Similar to male but occiput with 6 fine, well-individualized brown stripes; FWs short, overlapping slightly and with rounded ends (Fig. 2D).

Male measurements (holotype, in mm). -

BL, 18.37; PL, 3.83; PW, 4.07; FWL, 9.41; CL, 9.00; FL, 12.18; FW, 4.25; TL, 8.61. Stridulatory file with 156 teeth.