Assamacris bifurcata ( You & Bi, 1983 ) Mao & Niu & Huang, 2021

Mao, Ben-Yong, Niu, Yao & Huang, Jian-Hua, 2021, Taxonomic review of the genus Assamacris (Orthoptera: Acrididae: Catantopinae) with a new species and a newly discovered female, Zootaxa 4985 (4), pp. 542-556 : 548-550

Assamacris bifurcata ( You & Bi, 1983) , com. nov. ( Fig. 5 )

Traulitonkinacris bifurcata You & Bi, 1983 , in: You, Li & Bi, 1983: 165–166; Otte, 1995: 343; Yin, Shi & Yin, 1996: 713; Jiang & Zheng, 1998: 147; Li & Xia, 2006: 503.

Assamacris bifurcata ( You & Bi, 1983) , com. nov.

Type material examined. Paratypes, 1 male ( No. 14505673), 1980-VII-30 , 1 female ( No. 14505674), 1980-VI-2 , 1 female (not numbered), 1980-V-22, CHINA: Guangxi: Longzhou: Longrui, deposited in Institute of Biology , Guangxi Academy of Sciences ( IBGAS), Nanning, China .

Other material examined. 1 male, CHINA: Guangxi: Longzhou: Longrui , 2013-VII-23, coll. Tao WEI, deposited in BMDU .

Redescription. Male. Body sized medium, stout.

Head slightly shorter than prozona. Fastigium hexagonal, strongly prominent, flat, finely oblique forwards and downwards, foveola absent. Vertex with interocular distance 1.3–1.5 times as wide as frontal ridge between antennae, median longitudinal carina of vertex weak. Face foveolate, in profile remarkably oblique; frontal ridge prominent between antennae with margins parallel and raised, but slightly expanded around median ocellus, longitudinal sulcus deep; gradually subobsolete below transverse facial sulcus; lateral facial carinae visible.Antennae filiform, reaching base of hind femur, 23 segments, 9 th –11 th segment 3.9–4.2 times longer than wide. Eyes long oval, longitudinal diameter 1.3 times as long as horizontal one or 1.4 times as long as subocular furrow. Pronotum cylindrical; surface dotted and rugose; anterior margin broadly rounded, shallowly concave in middle; posterior margin roundly angular; median carina faint, distinctly intersected by three sulci; lateral carinae absent; prozona 1.5 times as long as metazona. Prosternal spine conical with apex acute. Tegmina developmental, nearly reaching 10 th abdominal tergite, or 7/10 of hind femur. Mesosternal lobes weakly longer than wide; mesosternal interspace 1.7–1.8 times as long as minimum width; lateral lobes of metasterum separate. Hind femur 4.5 times longer than wide; upper carina weakly serrate, terminating in a short spine; lower genicular lobes roundly angular. Hind tibia with 8–9 spines on both dorsal margins; inner spines longer than outer spines, outer apical spur absent. Hind tarsi with 1 st and 2 nd segments nearly as long as 3 rd segment; arolium a little shorter than length of claw. Tympana opening oval.

Male genitalia. 10 th abdominal tergite with small furculae. Supra-anal plate shield-shaped with median area somewhat raised and shallowly furrowed at base half; with a weak, transverse, median fold; lateral margins thickened and raised; posterior margin straight, apex nearly roundly rectangular. Cerci compressed and stout, reaching at or beyond apex of supra-anal plate; apex bilobate, dorsal brach clearly short, ventral branch longer and decurved. Subgenital plate short conical, apex obtuse. Epiphallus with lophi projecting in a 90° angle from bridge, nearly parallelogram-shaped, outer margin weakly rounded; anchorae hooked, narrow, pointing entad and apicad. Phallic complex: cingular valves triangular with sharp apex, apical penis valves finger-shaped with subacute apex in lateral view.

Coloration. Body dark brown. Fastigium light yellow, between eyes separating two bands to occiput, continuing as lateral bands on prozonal disc, forked on metazona, and cubital area of tegmina; vertex and occiput with a brown band between light ones, continuing on pronotum and dorsal area of tegmina; postocular bands brown, continuing along dorsal area of lateral lobes of pronotum and lateral areas of tegmina. Antennae yellow, but apical 15 segments dark. Tegmen brown except cubital area and hind half of precostal and costal areas. Ala hyaline but apical part dark brown. Fore and middle legs greenish yellow. Hind femur greenish yellow but lower side red, with two large black maculas on outer, upper and inner sides; knee black. Hind tibia light yellow, but black at base, middlle and apex, spines black. Abdominal tergites yellowish brown, with some irregular black spots; supra-anal plate with median longitudinal furrow and lateral margin black; cerci black.

Measurements (mm). Length between fastigium and hind knee: male 23.5, female 27.5; length of pronotum: male 5.0, female 6.2; length of tegmen: male 11.5, female 13.5; length of hind femur: male 12.4, female 14.4; length of antenna: male 13.6, female 11.2; length of eye: male 2.5, female 2.7; interocular distance: male 0.4, female 0.6.

Distribution. China: Guangxi.

Remarks. The species Traulitonkinacris bifurcata You & Bi, 1983 from Ningming county and Longzhou county (alt. 200–300 m), Guangxi, China, was firstly reported as the type of the genus Traulitonkinacris , but no description of male genitalia.The present paper describes its male genitalia for first time. It is so similar in morphology with other species of Assamacris that regarded as members of the genus Assamacris , consequently transferred to Assamacris as a new combination: Assamacris bifurcata ( You & Bi, 1983) , com. nov..

Figures

FIGURE 5. Assamacris bifurcata (You & Bi, 1983), com. nov.. A–D. Paratypes; A–B. Male habitus, dorsal and lateral views; C–D. Female habitus, dorsal and lateral views; E. Male terminalia, lateral view; F. Female right leg, lateral view; G–H. Labels; I–J. Epiphallus, dorsal and posterior views; K. phallic complex, lateral view. Scale bars = 1mm.