Asicimbex concavicaputus Yan & Wei, 2022

Yan, Yu-Chen, Yan, Wen-Long, Deng, Tie-Jun & Wei, Mei-Cai, 2022, Asicimbex Yan, Deng & Wei, a new genus with eight new species and four new combinations (Hymenoptera, Cimbicidae), Journal of Hymenoptera Research 91, pp. 265-308 : 265

Asicimbex concavicaputus Yan & Wei sp. nov.

Fig. 3

Material examined.

Holotype female, China: Henan Province, Lushi County, Yuhuangshan National Forest Park, 1720 m, 33°44.46'N, 110°49.900'E, 30 April 2019, leg. Shuxin Liu, Yiwen Zhang, (ASMN).

Diagnosis.

The species is similar to A. nanjingensis Yan & Wei sp. nov., but it differs from the latter in the following characters: the antennomere 3 shorter than longest axis of eye; malar space as long as the basal 2 antennomeres together; the anterior smoky stripe of the fore wing not extending to apex; head with the dorsal black macula broadly touching eyes laterally; posterior of the postocellar area distinctly concave at the middle; the fourth abdominal tergum yellowish brown; the bottom of the posterior incision of the first tergum broadly truncate; the dorsum of mesoscutellum sparsely punctured, the surface smooth; and the first annulus of lance 2.7 × as high as long.

Description.

Holotype, female. Body length 16 mm (Fig. 3A ).

Color. Head dark yellowish brown (Fig. 3C ), dorsum with a large quadrate black macula covering inner orbit, frontal area and ocellar area (Fig. 3D ), antenna dark reddish brown (Fig. 3F ); thorax black (Fig. 3G ), posterior margin of pronotum and anepimeron, tegula, mesoscutellum and lateral carina, small macula on posterior of mesepisternum, lower margin of metepisternum and metepimeron largely orange brown (Fig. 3B ); lateral carina of metanotum and cenchri yellowish brown; abdomen brownish black, tergum 4 except for narrow middle macula yellowish brown, lateral margins of tergum 1, terga 5-10 and sternum 7 brown (Fig. 3I, J ). Wings largely infuscate, cells 2Rs, 3Rs, 2M, 3M, 2Cu and 2A largely hyaline, veins largely brown to pale brown (Fig. 3A ); legs reddish brown, middle and hind coxae, all trochanters and femora black, tibiae blackish brown, tarsi paler toward apex (Fig. 3E ).

Head. Clypeus smooth with luster, anterior margin with broad and arcuate incision (Fig. 3C ); malar space about 2.3 × diameter of middle ocellus; postocellar area 1.6 × as broad as long, clearly concave in middle at posterior margin, lateral furrows narrow weakly divergent; POL: OOL: OCL = 5: 6: 8; head behind eyes distinctly enlarged (Fig. 3D ). Antenna about 1.5 × head breadth (Fig. 3F ), apical club 1.1 × as long as antennomere 3, with the widest breadth about 2.6 × apical breadth of antennomere 3, antennomere 3 slightly shorter than longest axis of eye.

Thorax. Mesonotum with dense and deep punctures, punctures on mesepisternum above carina and elevated parts of mesepimeron dense and deep, clearly defined, interspace between punctures almost smooth, concave area of mesepimeron microsculptured, punctures on ventral side of mesepisternum sparse (Fig. 3B ); mesoscutellum roundly elevated, without middle furrow; oblique middle carina on mesepisternum clear but not sharp; distance between cenchri about 3 × longest axis of a cenchrus (Fig. 3G ).

Abdomen. Abdominal tergum 1 distinctly punctured and microsculptured, with very weak luster, other terga finely and densely microsculptured, almost matte; lateral carina of tergum 1 distinct, anterior corner round, posterior corner weakly produced; posterior margin of tergum 1 with broad and deep incision, bottom almost truncate (Fig. 3I ); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance short and broad, subapical annuli feebly broadened, total length of annuli 3.6 × height of 13th annulus, first annulus 2.7 × as high as broad (Fig. 3K ); lancet with 42 serrulae (Fig. 3K ), middle serrulae small, distinctly narrowed toward blunt apex, each side with about 5 minute subbasal teeth, distance between serrulae about 2.3 × basal breadth of a serrula (Fig. 3H ).

Male. Unknown.

Distribution.

China (Henan).

Host plant.

Unknown.

Etymology.

The specific epithet of the species name is a combination of the Latin word " concavi -" and "- caputus ", referring to the posteriorly concave postocellar area at middle.

Figures

Figure 3. Asicimbex concavicaputus Yan & Wei sp. nov., holotype, female A female adult in dorsal view B mesopleuron and metapleuron C head in front view D head in dorsal view E leg F antenna G thoracic notum H middle serrulae I abdominal terga J lateral side of abdomen K lancet L ovipositor sheath in ventral view M claw.