Carinopius albocoxalis Tan

Tan, Jiang-Li, Tan, Qing-Qing, Achterberg, Cornelis Van & Chen, Xue-Xin, 2016, A new genus Carinopius gen. n. of the subfamily Opiinae (Hymenoptera, Braconidae) from China and Vietnam, with description of a new species, Zootaxa 4061 (5), pp. 569-574 : 572-573

Carinopius albocoxalis Tan & van Achterberg, sp. n.

( Figs 1–11 )

Type material. Holotype, ♀ ( RMNH), “N. Vietnam, Hoa Binh, Pa Co Hang Kia N.R., N20˚44'36", E104˚56'21", 1039 m, 23.x.2009, Taiw[an] tr[ap] 4, C. van Achterberg & R. de Vries, RMNH’09”. Paratype: ♀ ( NWUX), “SW. China: Yunnan, Menglun, Xishuangbanna, c 540 m, 4.x.2010, Bot[anical] garden, 21˚93'N, 101˚26'E, Jiangli Tan, NWUX ”.

Description. Holotype, ♀, length of body 5.2 mm, of fore wing 4.7 mm ( Fig. 1 ).

Head. Width 1.8× its median length in dorsal view, punctate dorsally and posteriorly. Behind ocellar triangle (stemmaticum) with a distinct pit; OOL: diameter of ocellus: POL= 7:5:4 ( Fig. 3 ). Frons depressed, anterior half behind antennal sockets crenulate and laterally with some rugae; posterior half shiny and punctate medially and slightly rugose laterally ( Fig. 3 ). Face densely setose, upper part transversely rugose; lower part densely punctate and laterally rugose except sparsely punctate medial part ( Fig. 2 ). Clypeus weakly convex, coarsely punctate and its ventral margin thin and slightly concave; width of clypeus 2.2× its maximum height and 0.7× width of face; hypoclypeal depression distinct and narrow ( Fig. 2 ). Antennal sockets strongly protruding ( Fig. 3 ). Eye glabrous, in dorsal view 3.3× longer than temple, distinctly depressed along posterior and dorsal margins of eye (= subocular depression); eye slightly emarginated near base of antennal socket, 2.4× as high as broad in anterior view ( Figs 2-4 ). Temple behind eye (in dorsal view) roundly contracted ( Fig. 3 ). Occipital carina strongly developed and lamelliform laterally with a small angulate part dorsally ( Fig. 3 ), largely absent medio-dorsally and separated from hypostomal carina ventrally ( Fig. 4 ). Temple and malar space coarsely punctate; length of malar space 0.3× height of eye and 0.7× basal width of mandible; malar suture mainly developed near eye ( Fig. 4 ). Mandible somewhat twisted and gradually widened baso-ventrally, with distinct teeth and ventral carina ( Fig. 5 ); length of maxillary palp 1.3× height of head; labial palp segments slender. Antenna with 48 articles and 1.4× as long as fore wing; third article as long as fourth article, length of third, fourth and penultimate articles 1.6×, 2.0× and 4.5× their width, respectively.

Mesosoma. Distinctly flattened in lateral view; length of mesosoma twice its height ( Fig. 7 ). Pronotum smooth laterally (but anteriorly with a distinct crenulate groove), crenulate posteriorly and finely punctate dorsally; dorsal pronope round and medium-sized ( Figs 3, 8 ); propleuron evenly convex, shiny and punctulate ( Fig. 7 ). Mesoscutum directly raised above pronotum, shiny and finely punctate; notauli incomplete, only impressed in anterior third of mesoscutum, rather deep and crenulate; medio-posterior depression of mesoscutum absent; transverse suture of mesoscutum present; scutellar sulcus deep and broad medially, with five carinae, 0.3 × as long as scutellum, laterally curved, narrowed and finely crenulate ( Fig. 8 ); scutellum largely smooth, punctulate, flat, without subposterior depression; side of scutellum crenulate ( Figs 7-8 ). Mesopleuron sparsely punctate; prepectal and postpectal carinae absent; precoxal sulcus wide, crenulate and sloping down; pleural sulcus smooth; mesepimeral flange widened near pleural scrobe ( Fig. 7 ); mesosternal sulcus narrow and crenulate. Metapleuron medially punctulate and laterally coarsely crenulate or rugose ( Fig. 7 ). Propodeum coarsely foveolate-reticulate with two small smooth patches antero-dorsally; transverse subbasal carina absent; median carina developed anteriorly and merged posteriorly into surrounding sculpture ( Fig. 9 ).

Wings. Fore wing ( Fig. 6 ): length 3.0× as long as its maximum width. Pterostigma elongate triangular, 3.6× as long as its maximum width; vein M+CU1 weakly curved, sclerotized; vein r-m present, slightly oblique; 1-R1 ending before wing apex; 2-SR:3-SR:r-m = 27:50:17; vein r slightly widened, arising before middle of pterostigma; 1-M and SR1 slightly curved; m-cu antefurcal; cu-a postfurcal and inclivous; 1-CU1 slightly widened; CU1b short. Hind wing ( Fig. 6 ): M+CU:1-M:1r-m = 18:32:17; cu-a straight; m-cu absent.

Legs. Hind femur, tibia and basitarsus 3.4×, 8.6× and 5.8× as long as wide, respectively; hind tibial spurs about 0.2× hind basitarsus; hind tibia distally with six spines on its outer side ( Fig. 10 ) and baso-laterally without oblique carina on its inner side.

Metasoma. Metasoma 1.2× as long as head and mesosoma combined; seven tergites exposed ( Fig. 1 ). Tergite I 1.1× as long as wide apically, its surface moderately convex and coarsely rugose; dorsal carinae merged basally into a complete median carina ( Fig. 9 ); laterope and glymma present ( Fig. 11 ), dorsope absent. Second suture present; tergite II strongly rugose except smooth medio-posterior patch; tergite III shiny, sparsely setose with some longitudinal striae dorso-anteriorly and posteriorly with longitudinal impressions ( Fig. 9 ); following tergites shiny and smooth but each apical margin superficially similarly impressed; tergites III–IV latero-posteriorly protruding ( Fig. 11 ). Setose part of ovipositor sheath 0.2× as long as fore wing, 1.6× tergite I and 0.8× as long as hind tibia; hypopygium subtrunctate ventro-apically and about 0.7× as long as tergite I ( Fig. 11 ).

Colour. Black or dark brown; head and mesosoma (except propodeum) brownish yellow; antenna, stemmaticum, tip of mandible, pterostigma, veins (but basal half of vein M+CU1 pale brown), hind tibia, hind tarsus (but telotarsus yellowish brown) and ovipositor sheath dark brown; palpi, fore and middle legs and hind coxa and hind femur, and metasoma ventrally pale yellow or yellowish white; wing membrane subhyaline ( Fig. 1 ).

Variation. Length of body 5.2-6.8 mm, of fore wing 4.7-5.0 mm; antenna with 48 or 54 articles; length of mesosoma 1.9-2.0× its height; length of hind femur, tibia and basitarsus 3.4–4.0×, 8.6–10.0× and 5.8–7.0× as long as wide; length of first tergite 1.1–1.2× its apical width.

Distribution. Oriental China (Yunnan), NW Vietnam.

Biology. Unknown.

Figures

FIGURE 1. Carinopius albocoxalis Tan & van Achterberg, sp. nov., habitus, lateral aspect.

FIGURES 2 – 11. Carinopius albocoxalis Tan & van Achterberg, sp. nov., holotype, ♀. 2 — head, anterior aspect. 3 — head, dorsal aspect. 4 — head, lateral aspect. 5 — left mandible. 6 — left wings; 7 — mesosoma, lateral aspect. 8 — mesosoma, dorsal aspect. 9 — propodeum and metasomal tergites I – III, dorsal aspect. 10 — left hind leg. 11 — metasoma, lateral aspect.