Asicimbex latistriatus Yan, Deng & 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 latistriatus Yan, Deng & Wei sp. nov.

Fig. 8

Material examined.

Holotype, female, China: Henan Province, Shan County, Ganshan Park , alt. 1000 m, 31 May 2000, leg. Meicai Wei & Yihai Zhong (ASMN) . Paratypes, 7 females and 2 males, same data as the holotype ; 1 female and 4 males, same locality , 1 June 2000 (ASMN).

Diagnosis.

The species is most similar to A. nanjingensis Yan & Wei sp. nov., but differs from the latter in the following characters: the postocellar area 1.2-1.3 × broader than long; abdominal tergum 1 without lateral carina, the posterior corner of the tergum not produced; the dorsum of mesoscutellum sparsely and minutely punctured, the surface smooth; the antennomere 3 clearly longer than longest axis of eye; the total length of lance annuli 3.9 × height of the 13th annulus, the first annulus 2.7 × as high as broad; lancet with 46 serrulae.

Description.

Holotype, female. Body length 14 mm (Fig. 8A ).

Color. Head including antenna dark yellowish brown (Fig. 8A ), frons and nearby with an obscure black macula (Fig. 8C, F ); thorax black, posterior margin and lateral corner of pronotum, tegula, mesoscutellum and lateral carina dark brown, mesepisternum above carina largely, posterior margin of mesepimeron, irregular macula on metepisternum and large macula on metepimeron reddish brown (Fig. 8K ); abdomen dark brown, basal margin of tergum 1 and small macula near posterior corner, anterior 4/5 of tergum 2, anterior 1/3 of tergum 3, basal margin of terga 4-7 and sterna 1-3 largely black, tergum 4 slightly paler (Fig. 8O, P ). Fore wing strongly smoky, cells 2M, 3M, 2Cu and A largely hyaline, veins and pterostigma largely brown to dark brown; hind wing weakly infuscate (Fig. 8A ). Legs dark brown, middle and hind coxae, trochanters and dorsal side of femora black (Fig. 8I, J ).

Head. Dorsum of head with indistinct and fine punctures, other parts smooth, with strong luster (Fig. 8C, F ). Clypeus clearly elevated in middle, anterior margin with small and deep incision; malar space 1.8 × diameter of middle ocellus (Fig. 8C ); postocellar area about 1.2-1.3 × broader than long; median furrow weak, lateral furrows fine, weakly divergent backwards; POL: OOL: OCL = 5: 6: 9; in dorsal view head enlarged behind eye (Fig. 8F ). Antenna about 1.4 × longer than head breadth (Fig. 8H ); apical club slightly longer than antennomere 3, with the widest breadth 2.4 × apical breadth of antennomere 3, antennomere 3 clearly longer than longest axis of eyes (45: 39).

Thorax. Mesothorax densely punctured, punctures on mesoscutellum sparser, surface smooth; mesonotum feebly shiny; punctures on mesepisternum above carina and elevated parts of mesepimeron dense and deep, clearly defined, interspace between punctures smooth, concave area of mesepimeron microsculptured, punctures on ventral side of mesepisternum sparse (Fig. 8E, K ); mesoscutellum roundly elevated, without middle furrow; oblique middle carina on mesepisternum weak but recognizable; cenchri oval, distance between cenchri about 3.4 × longest axis of a cenchrus, metascutellum triangularly elevated, distance between serrulae about 2.3 × basal breadth of a serrula (Fig. 8E ).

Abdomen. Abdominal tergum 1 with minute punctures and microsculptures, other terga finely and densely microsculptured (Fig. 8O, P ). Tergum 1 without lateral carina, hind corner roundish, not produced, posterior incision broad and deep, bottom round (Fig. 8O ); 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 3.9 × height of 13th annulus, first annulus 2.7 × as high as broad (Fig. 8N ); lancet with 47 annular sutures and 46 serrulae (Fig. 8N ), middle serrulae narrowly truncate at apex with about 5 proximal and 5 distal subbasal teeth (Fig. 8Q ).

Male. Body length 16 mm (Fig. 8B ), body color and structure (Fig. 8D, G ) similar to female except for following parts: posterior of postocellar area in middle with a shallow depressed groove; abdominal terga 2-3 largely blackish brown; middle and hind coxae and femora distinctly elongated, with carina; hind femora distinctly swollen, about twice as broad as trochanter; penis valve shown in Fig. 8M , gonoforceps as shown in Fig. 8L .

Distribution.

China (Henan); South Korea?

Variation.

Body length 13-15 mm in female, 16-17 mm in male; club of antenna dark brown or yellowish brown; middle and hind coxae brown or blackish brown.

Etymology.

The specific epithet is a combination of the Latin word: " lati -" and "- striatus ", referring to the fore wing with a broad longitudinal smoky stripe.

Host plant and larva

. The adult types of the new species were reared two years later from the larvae collected on the trunk of Ulmus sp. The matured larvae are yellow colored with black head, thorax and abdomen without black macula.

Remarks.

The senior author of the paper examined 2 females and 3 males of A. latistriatus from South Korea in 2013, when there were only five species ( Asicimbex eous , Asicimbex malaisei , Asicimbex elminus , Asicimbex ulmusvorus and the undescribed Asicimbex latistriatus ) of the undescribed genus Asicimbex known to the author. The specimens were kept in Yeungnam University. Confirmation of this faunal record requires re-examination of the specimens.

Figures

Figure 8. Asicimbex latistriatus Yan & Wei sp. nov., A holotype female in dorsal view B allotype male in dorsal view C head of female in front view D head of male in front view E thoracic notum F head of female in dorsal view G head of male in dorsal view H antenna of female I tibia and tarsus J coxa and femur of male K mesopleuron and metapleuron L gonoforceps M penis valve N lancet O abdominal terga P lateral side of abdomen Q middle serrulae R claw.