Asicimbex koreanus 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 koreanus Yan & Wei sp. nov.

Fig. 7

Material examined.

Holotype, female, South Korea: [GG] Hwaseong-gun , 24 May 1992, H. J. Lee (YNU) . Paratypes, 4 females and 1 male, data as holotype .

Diagnosis.

A. koreanus Yan & Wei sp. nov. is quite close to A. malaisei (Gussakovskij, 1947) comb. nov. from Ussuri of Russia. It differs from the latter by the following characters: the apical club of antenna longer than antennomere 3 and about 1.6 × as long as antennomeres 4 and 5 together; cenchrus very narrow and about 4 × as long as broad; the dorsum of mesoscutellum densely punctured; the upper half of mesepisternum densely punctured mixed with wrinkles; the lateral carina of the first abdominal tergum roundly curved, the anterior corner not angulate; the apex of the middle process of the seventh sternum acute; the black macula on dorsum of head not subquadrate, with three processes; the apical margin of fore wing without smoky macula; lancet with 56 serrulae, the distance between middle serrulae broader than 2 × breadth of a serrula.

Description.

Holotype, female. Body length 21 mm (Fig. 7A ).

Color. Head and antenna yellowish brown, dorsum with a M-shaped black macula, clypeus and mouthparts largely yellow brown (Fig. 7C, E ); thorax largely black, narrow posterior margin and broad lateral margin of pronotum, anterior part of tegula, mesoscutellum, dorsum of metascutellum, posterior 3/4 of mesepisternum above carina and posterior half of katepimeron, metepisternum largely yellowish brown (Fig. 7F ); abdomen yellowish 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, broad quadrate middle macula on terga 6-8 pale yellow brown, lateral part of terga 6-8 dark brown (Fig. 7G, H ), sterna largely dark brown (Fig. 7I ); fore wing distinctly infuscate, outer margin of fore wing without narrow smoky maculae, cells 2Rs, 3Rs, 2M, 3M, 1Cu, 2Cu and 2A largely subhyaline, veins and pterostigma pale brow; hind wing very feebly infuscate; legs largely yellowish brown, middle and hind coxae, trochanters and femora largely black, tarsi yellowish white (Fig. 7A, J ).

Head. Dorsum of head with minute punctures, clypeus smooth, with strong luster (Fig. 7C , 7E ). Clypeus elevated, anterior margin roundly incised; labrum as long as broad, apex round; malar space 1.7 × 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 weakly enlarged (Fig. 7C ). Antenna 1.6 × head breadth, club breadth 2.2 × apical breadth of antennomere 3, club length 1.1 × as long as antennomere 3 and 1.6 × combined length of antennomeres 4 and 5 (Fig. 7D ), antennomere 3 as long as longest axis of eye.

Thorax. Mesonotum minutely and densely punctured (Fig. 7B ); scutellum roundly elevated without middle furrow, dorsum densely punctured; mesepisternum above carina densely and minutely punctured mixed with microsculptures, oblique carina on mesopleuron sharp, mesepimeron largely polished, shiny (Fig. 7F ); cenchri very narrow and about 4 × as long as broad, distance between inner margin of cenchri 2.8 × longest axis of a cenchrus (Fig. 7B ).

Abdomen. Abdominal tergum 1 minutely punctured mixed with microsculptures, without lateral smooth patch; lateral carina low and obtuse, anterior and posterior corners round, posterior margin with broad and deep incision, bottom round (Fig. 7G ); middle process of sternum 7 broad and triangular, basal breadth about 1/3 breadth of sternite 7; lance long and slender, subapical annuli clearly broadened, total length of annuli 5.4 × height of 13th annulus, first annulus 1.8 × as high as broad (Fig. 7L ); lancet with 57 annuli and 56 serrulae (Fig. 7L ), middle serrulae weakly narrowed toward truncate apex, each side with 4-5 large subbasal teeth, distance between middle serrulae 2.2 × basal breadth of serrulae (Fig. 7M ).

Male. Color and structure similar to female. Genitalia not examined.

Distribution.

South Korea.

Host plant.

Unknown.

Figures

Figure 7. Asicimbex koreanus Yan & Wei sp. nov., holotype, female A female adult in dorsal view B thoracic notum C head in dorsal view D antenna E head in front view F mesopleuron and metapleuron G abdominal terga H lateral side of abdomen I ovipositor sheath in ventral view J tibia and tarsus K claw L lancet M middle serrulae.