Asicimbex eous (Semenov, 1935) 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 eous (Semenov, 1935) comb. nov.

Fig. 6

Agenocimbex eoa Semenov, 1935, 15. 9-11.

Material examined.

1 female, Якoвлoвка Сцас. у. Усср, кр, 23 May 1926, Дъякoнв Филинпъев; Agenocimbex eoa Sem., ♀, Gussakovskij, det.; Asicimbex eous (Semenov, 1935), Det. M.C. Wei, 2022 (Fig. 6K ) (NHRS).

Diagnosis.

A. eous (Semenov, 1935) is close to A. maculotegularis Yan & Wei sp. nov., but differs from the latter by the following characters: tegula entirely yellow brown; the lateral side of the first abdominal tergum black; the 4th abdominal tergum with a large middle black macula; the middle and hind tibiae yellowish brown; the middle of first abdominal tergum not produced; the female lancet with 55 serrulae, distance between the middle serrulae 2.6 × basal breadth of serrulae.

Description.

Not type, female. Body length 16-18 mm (Fig. 6A ).

Color. Head brown, dorsum with a quadrate black macula covering ocellar area, frons, inner half of inner orbit, lateral and middle foveae, clypeus and mouthparts largely yellow brown (Fig. 6D ), antenna dark reddish brown (Fig. 6C ); thorax black, pronotum largely, tegula, mesoscutellum, dorsum of metascutellum, posterior half of mesepisternum and of katepimeron, posterior stripe of metapleuron yellowish brown (Fig. 6H ); abdomen yellowish brown, dorsal side of terga 1-3 black, broad middle macula on tergum 4 black and laterally yellow brown, tergum 5 yellow brown except for a small triangular macula at middle anteriorly, lateral part of terga 6-8 dark brown, pale macula at middle of terga 6-8 of gradually shortened (Fig. 6M ); fore wing smoky, outer margin of fore wing without narrow smoky maculae, cells 3Rs, 2M, 3M, 1Cu, 2Cu and 2A largely subhyaline, veins and pterostigma pale brown; hind wing very feebly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black (Fig. 6A ).

Head. Dorsum of head with minute punctures, clypeus smooth, with strong luster (Fig. 6B, D ). Clypeus elevated, anterior margin roundly incised; labrum small and triangular, slightly longer than broad; malar space 2 × diameter of middle ocellus; postocellar area 2.1 × broader than long, middle furrow weak; lateral furrows distinct, divergent backwards; POL: OOL: OCL = 3: 5: 6; head behind eyes weakly enlarged (Fig. 6B ). Antenna 1.4 × head breadth, club breadth 2.3 × apical breadth of antennomere 3, club length 1.2 × as long as antennomere 3 (Fig. 6C ), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum densely punctured (Fig. 6I ); scutellum strongly elevated, sparsely and minutely punctured, with a broad and deep longitudinal furrow occupying middle 1/4; mesepisternum above carina densely punctured mixed with microsculptures, oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 6H ); cenchri narrow, distance between inner margin of cenchri 2.5 × the longest axis of a cenchrus (Fig. 6I ).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina obtuse, anterior corner blunt but distinct, posterior corner roundish; posterior margin with broad and deep incision, bottom round (Fig. 6I, M ); middle process of sternum 7 narrow and triangular, basal breadth about 1/6 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 5 × height of 13th annulus, first annulus 1.8 × as high as broad (Fig. 6L ); lancet with 56 annuli and 55 serrulae (Fig. 6L ), middle serrulae weakly narrowed toward truncate apex, each side with 4-5 large subbasal teeth, distance between middle serrulae 2.6 × basal breadth of serrulae (Fig. 6N ).

Male. Unknown.

Distribution.

Russia (Ussuri, Vladivostok).

Host plant.

Unknown.

Figures

Figure 6. Asicimbex eous (Semenov, 1935) comb. nov., paratype, female A female adult in dorsal view (red arrow denotes outer margin of fore wing without narrow smoky maculae) B head in dorsal view C antenna D head in front view E claw F ovipositor sheath in lateral view G ovipositor sheath in ventral view (green arrow denotes middle process of sternum 7 narrow triangular) H mesopleuron and metapleuron I thoracic notum (purple arrow denotes scutellum with a broad and deep longitudinal furrow occupying middle 1 / 4) J spur in hind tibia K label L lancet M abdominal terga (blue arrow denotes lateral carina of abdominal tergum 1 obtuse, anterior corner blunt) N middle serrulae (orange arrow denotes pattern of subbasal teeth, distance between middle serrulae 2.6 x basal breadth of serrulae).