Asicimbex ulmusvorus (Yang, 1996) Yan & 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 ulmusvorus (Yang, 1996) comb. nov.

Fig. 14

Agenocimbex ulmusvora Yang, 1996, 23(1): 5-7.

Material examined.

2 females and 1 male, China: Henan Province, 10 June , no other data ; 1 female, China , without collection data (ASMN) ; 3 females and 3 males, [ CHINA: Hubei] Wuhan, 14 April 1990 (2 females and 2 males, kept in NMST, 1 female and 1 male, exchanged specimens, kept in ASMN) ; 1 female and 1 male, China: Anhui Province, Yuexi, 1983, Guoqing Zhong , Tiying Zhou ; 2 females, China: Zhejiang, Lishui , 2-3 April 1981 ; 2 males, China: Zhejiang, Lishui , 2 April 1979 , larvae feeding on Ulmus parvifolia ; 1 male, China: Zhejiang, Hangzhou , 26 April 1981 , Guangwu Li; 1 female, China: Zhejiang, Hangzhou Plant Garden , larvae feeding on Ulmus parvifolia (CAF) .

Diagnosis.

The species is very different from its congeners in the following characters: the body much more slender and largely yellow brown, the dorsum of head without large black macula, the dorsum of thorax with three isolated black maculae, the abdomen yellow, the second tergum black with a transverse middle yellow macula; malar space 1.2 × diameter of median ocellus; antenna long and about 1.8 × (female) or 2.1 × (male) head breadth, the club breadth 1.7 × apical breadth of antennomere 3; the abdominal tergum 1 largely smooth and shiny; the middle serrulae each with 2-3 large lateral teeth, and the total annuli length of lance 5.9 × height of the 13th annulus.

Description.

Not type. Female. Body length 20 mm (Fig. 14A ).

Color. Body yellowish brown (Fig. 14A ), small macula on bottom of lateral fovea and middle fovea blackish brown, clypeus and mouthparts paler (Fig. 14D ); middle furrow of pronotum, three longitudinal stripes on mesonotum (Fig. 14I ), mesosternum except middle furrow, broad anterior stripe on mesepimeron, metapleuron largely, middle and hind coxae, trochanters and femora, tergum 2 except middle macula, basal margin of abdominal terga 1 and 3-5, black; antenna dark reddish brown; middle and hind tibiae reddish brown. Wing color as in Fig. 14A , stigma yellowish brown.

Head. Dorsum of head minutely punctured, clypeus smooth, with luster; malar space 1.2 × diameter of middle ocellus (Fig. 14D ); postocellar area slightly elevated, about 2 × broader than long, median furrow weak; lateral furrows shallow and curved, subparallel to each other; POL: OOL: OCL = 3: 5: 7, head behind eyes slightly enlarged (Fig. 14C ). Antenna about 1.8 × longer than head breadth, antennomere 3 slightly curved, longer than longest axis of eyes (43: 38); club enlarged, widest breadth about 1.7 × apical breadth of antennomere 3 and about as long as antennomere 3 (Fig. 14F ).

Thorax. Median and lateral mesoscutal lobes with distinct punctures, surface smooth; dorsum of mesoscutellum sparsely punctured; mesepisternum minutely punctured mixed with irregular wrinkles, less shiny, mesepimeron sparsely punctured, shiny (Fig. 14E ). Mesoscutellum roundly elevated, without middle furrow (Fig. 14I ); mesepisternum with weak oblique carina (Fig. 14E ); cenchri elliptical, distance between inner margin of cenchri 2.1 × longest axis of a cenchrus (Fig. 14I ).

Abdomen. Abdominal tergum 1 smooth, with strong luster; other terga densely and minutely microsculptured, with feeble luster; tergum 1 with broad and round incision, lateral carina low but distinct, anterior corner angulate, posterior corner not produced; subgenital plate strongly protruded in middle 1/3. Lancet with 54 serrulae (Fig. 14L ), middle serrulae weakly narrowed toward truncate apex, with 2-3 proximal and distal subbasal teeth, distance between serrulae 1.8 × basal breadth of serrulae (Fig. 14O ); lance long and slender, subapical annuli broadened, total length of annuli 5.9 × height of 13th annulus, first annulus 1.5 × as high as broad (Fig. 14L ).

Male. Body length 20 mm (Fig. 14B ). Body color and structures similar to female except for head hardly dilated behind eye in dorsal view and antenna about 2.1 × head breadth; apex of subgenital plate roundish; gonoforceps as in Fig. 14M , penis valve as in Fig. 14N .

Distribution.

China (Anhui, Henan, Hubei, Zhejiang).

Host plant and larvae.

Ulmus parvifolia Jacq. and U. pumila L. ( Yang and Li 1996). The larva is green with 3 irregular black maculae on each annulus of body except for the last one ( Yang et al. 1996).

Figures

Figure 14. Asicimbex ulmusvorus (Yang, 1996) comb. nov. A female in dorsal view B male in dorsal view C head of female in dorsal view D head of female in front view E mesopleuron and metapleuron F antenna of female G head of male in dorsal view H head of male in front view I thoracic notum J hind tarsus K lateral side of abdomen L lancet M gonoforceps N penis valve O middle serrulae.