Turanogryllus zamakoensis Um Nyobe, Kekeunou & Bilong Bilong, 2022

Nyobe, Philene Corinne Aude Um, Robillard, Tony, Kekeunou, Sevilor, Ma, Libin, Nzike, Marcelle Mbadjoun & Bilong, Charles Felix Bilong, 2022, Description of two new species of Turanogryllini crickets (Orthoptera, Gryllidae, Gryllinae) from Cameroon, with identification keys for African species, Journal of Orthoptera Research 31 (1), pp. 83-89 : 83

publication ID

https://dx.doi.org/10.3897/jor.31.73389

publication LSID

lsid:zoobank.org:pub:4A9BAEB1-2BDB-48DC-9F54-34210B51FE57

persistent identifier

https://treatment.plazi.org/id/DFD1267F-4E26-47D6-8C38-DADE761156E1

taxon LSID

lsid:zoobank.org:act:DFD1267F-4E26-47D6-8C38-DADE761156E1

treatment provided by

Journal of Orthoptera Research by Pensoft

scientific name

Turanogryllus zamakoensis Um Nyobe, Kekeunou & Bilong Bilong
status

sp. nov.

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 View Fig. 2 , 3 View Fig. 3 ) Male. Size average, brown, lighter than other species. Head dark brown with four pale stripes on occiput, not extending over vertex (Fig. 2A View Fig. 2 ); cheeks pale (Fig. 2B View Fig. 2 ); ocelli large; face entirely pale below median ocellus and below level of antennae (Fig. 2C View Fig. 2 ). Pronotum covered with very fine pubescence, without bristles; dorsum dark brown, muscle attachment plates pale brown (Fig. 2A View Fig. 2 ); lateral lobes ivory, becoming dark brown at upper margin (Fig. 2B View Fig. 2 ). 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 View Fig. 2 ). Hind wings short, hidden by FWs. Abdomen dorsum dark brown; venter pale; cerci pale. Male genitalia (Fig. 3 View 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 View Fig. 2 ).

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.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Gryllidae

Genus

Turanogryllus