Asicimbex malaisei (Gussakovskij, 1947) comb. nov., New record for China

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 malaisei (Gussakovskij, 1947) comb. nov., New record for China

Fig. 11

Agenocimbex malaisei Gussakovskij, 1947: 30, 32.

Material examined.

1 female, China: Heilongjiang Province, Shangzhi, Mt. Mao'er , 4 June 2014, leg. Jun Xu (ASMN) .

Diagnosis.

This new species is most similar to A. koreanus Yan & Wei sp. nov. but differs from the latter by the following characters: the black macula on dorsum of head subquadrate; the apical club of antenna as long as antennomere 3, about 1.3 × as long as antennomeres 4 and 5 together; cenchrus normal, about 3 × as long as broad; the dorsum of mesoscutellum sparsely punctured; the upper half of mesepisternum sparsely punctured, wrinkles indistinct; the lateral carina of the first abdominal tergum roundly curved only in posterior half, anterior corner angulate; lancet with 48 serrulae, the distance between the middle serrulae about 2 × breadth of a serrula; lance slender with the first annulus 1.8 × as high as broad.

Description.

Not type, female. Body length 21 mm (Fig. 11A ).

Color. Head and antenna yellowish brown, dorsum with a subquadrate black macula, clypeus and mouthparts largely yellow brown (Fig. 11C, E ); thorax largely black, very narrow posterior margin and narrow lateral margin of pronotum, mesoscutellum, dorsum of metascutellum, posterior 3/4 of mesepisternum above carina and posterior stripe of katepimeron, metepisternum largely dark brown (Fig. 11B, F ); abdomen mostly dark brown, dorsal side of terga 1-3 entirely, broad triangular middle macula on tergum 4 and narrow basal margin of tergum 5 black, narrow lateral margin of tergum 1, tergum 4 except for middle triangular macula, tergum 5 almost entirely yellowish brown, broad quadrate middle macula on terga 6-8 pale brown (Fig. 11G ), lateral part of sterna 4-6 and most of sternum 7 pale brown (Fig. 11H, K ); fore wing infuscate in anterior half, outer margin of fore wing with narrow smoky macula, cells 2Rs, base of 3Rs, 2M, most of 3M, apical 2/5 of 1Cu, 2Cu and 2A largely subhyaline, veins and pterostigma pale brown; hind wing faintly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black, tarsi largely yellowish white (Fig. 11A, I, J ).

Head. Dorsum of head with minute punctures, clypeus smooth, with strong luster (Fig. 11C, E ). Clypeus elevated, anterior margin roundly incised; labrum as long as broad, apex round; malar space 1.5 × diameter of middle ocellus; postocellar area 2 × broader than long, middle furrow weak; lateral furrows distinct, feebly divergent backwards; POL: OOL: OCL = 3: 5: 6; head behind eyes distinctly enlarged (Fig. 11C ). Antenna 1.5 × head breadth, club breadth 2.2 × apical breadth of antennomere 3, club length 1.1 × as long as antennomere 3 and 1.3 × combined length of antennomeres 4 and 5 (Fig. 11D ), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum minutely and densely punctured (Fig. 11F ); scutellum roundly elevated without middle longitudinal furrow, dorsum densely punctured, anterior slope sparsely punctured; mesepisternum above carina sparsely punctured, wrinkles indistinct; oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 11B ); cenchri very narrow and about 4 × as long as broad, distance between inner margin of cenchri 3 × longest axis of a cenchrus (Fig. 11B ).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina low and obtuse, anterior corner angulate, posterior corner round, posterior margin with broad and deep incision, bottom round (Fig. 11G ); middle process of sternum 7 broad, apex roundish, basal breadth about 1/3 breadth of sternite 7 (Fig. 11K ); lance long and slender, subapical annuli clearly broadened, total length of annuli 5.2 × height of 13th annulus, first annulus 1.5 × as high as broad (Fig. 11M ); lancet with 57 annuli and 56 serrulae (Fig. 11M ), middle serrulae weakly narrowed toward truncate apex, each side with 3-4 large subbasal teeth, distance between middle serrulae 2 × basal breadth of serrulae (Fig. 11N ).

Male. Color and structure similar to female. Genitalia not examined. Description of male see ( Gussakovskij 1947).

Distribution.

China (Heilongjiang); Russia (Ussuri).

Host plant.

Unknown.

Remarks.

Gussakovskij ( Gussakovskij 1947) described this species and discussed the possibility of it being the male of Asicimbex eous ( Semenov 1935). But, the difference with A. eous are the outer margin of fore wing with narrow smoky macula; the mesoscutellum without middle longitudinal furrow, dorsum densely punctured; anterior slope sparsely punctured; the middle process of female sternum 7 narrow triangular, basal breadth much shorter than height and about 1/6 breadth of the sternum; the pattern of subbasal teeth, distance between middle serrulae 2 × basal breadth of serrulae; the lateral carina of abdominal tergum 1 low and obtuse, anterior corner angulate, posterior corner round. These characteristics indicate that A. malaisei and A. eous are distinct species.

Figures

Figure 11. Asicimbex malaisei (Gussakovskij, 1947) comb. nov., not type, female A female adult in dorsal view (Red arrow denotes outer margin of fore wing with narrow smoky macula) B mesopleuron and metapleuron C head in dorsal view D antenna E head in front view F thoracic notum (purple arrow denotes scutellum without middle longitudinal furrow) G abdominal terga (anterior corner of lateral carina angulate at abdominal tergum 1) H lateral side of abdomen I coxa and femur J tibia and tarsus K ovipositor sheath in ventral view (green arrow denotes middle process of sternum 7 narrow triangular) L claw M lancet N middle serrulae (orange arrow denotes pattern of subbasal teeth).