Copidosoma linzhiensis Li & Wang, 2018

Wang, Hai-Yan & Li, Cheng-De, 2018, Key to Chinese species of Copidosoma (Hymenoptera: Encyrtidae), with new records and three new species, Zootaxa 4418 (4), pp. 353-369 : 359-360

Copidosoma linzhiensis Li & Wang , sp. nov.

Figs 13–18

Type material. Holotype. ♀ [No. E 1408-01, on slide, NEFU], CHINA, Xizang Autonomous Region (= Tibet), Linzhi City, Lulang Town , 17–19.VIII.2014, Hui-lin Han , YPT . Paratypes. 2 ♀ [No. E 1408-02, E1408-03, on slides, NEFU], same data as holotype ; 1 ♀ [No. E 1307-01, on slide, NEFU], CHINA, Xizang Autonomous Region (= Tibet), Mt. Sejila, 3500 m, 30.VII–4.VIII.2013, Xiang-Xiang Jin , Guo-Hao Zu , Chao Zhang , YPT.

Diagnosis. Female. Head and mesosoma dark brown, metasoma yellow at base and gradually becoming yellowish brown to brown distad. Wings hyaline except for a small brown spot around marginal and stigmal veins of fore wing, frontovertex 0.44–0.53× head width; malar space about 0.64–0.76× as long as eye height; mandible with three teeth, pedicel shorter than F1 and F2 combined; funicle 6-segmented, F1 0.67–0.7× as long as pedicel; clava 1-segmented and strongly obliquely truncated at apex, truncated part 0.7 8–0.92× length of clava; mesoscutum and scutellum with shallow polygonal-rounded reticulate sculpture; marginal vein 0.9× as long as stigmal vein, postmarginal vein 0.6× as long as stigmal vein, linea calva completely open posteriorly; metasoma slightly longer than mesosoma. Ovipositor 0.31–0.39× as long as metasoma and 0.36–0.42× as long as mesotibia, barely exerted, third valvula separate from second valvifer and 0.9× as long as the latter; hypopygium not reaching the apex of metasoma.

Description. Female. Holotype. Length, 1.56mm. Head mostly black with maxillary pales yellow, frontovertex with metallic golden yellow reflection. Antenna dark brown with a narrow yellow ring at extreme base of scape. Mesosoma including tegula dark brown, mesoscutum and scutellum with golden reflection. Wings hyaline except for a small brown spot around marginal and stigmal veins of fore wing. Legs with all tarsi dark brown; fore leg mostly yellow except basal half of ventral margin of femur, brown; mid leg with coxa and trochanters dark brown, femur yellow and tibia yellowish brown, tibial spur yellow; hind leg mostly blackish brown except coxa, trochanters, basal half of femur and extreme base of tibia, yellowish. Metasoma yellow at base and gradually becoming yellowish brown to brown distad.

Head ( Fig. 13 ), in frontal view, frontovertex at the point of anterior ocellus 0.53× head width. Ocelli forming an obtuse triangle. OOL 2× as long as OD, OCL 0.67× as long as OD. Lower face and malar space with longitudinally lineolate-reticulate sculpture. Malar space about 0.64× as long as eye height. Mandible with three teeth. Antenna ( Fig. 14 ) relatively slender, scape 4.9× as long as broad; pedicel 2.5× as long as broad, shorter than F1 and F2 combined; funicle 6-segmented and gradually widening distad, F1 0.67× as long as pedicel; clava 4× as long as broad and 1.2× as long as scape, about as long as 4.5 preceding funicular segments combined and distinctly broader than preceding funicular segment; clava 1-segmented and strongly obliquely truncated at apex, truncated part about 0.92× length of clava. Relative measurements: HW, 49; FVW, 26; MS, 18.3; EH, 28.6; length (width): scape, 29 (5.9); pedicel, 12 (4.8); F1, 8 (3); F2, 7 (3); F3, 7.4 (3.6); F4, 7.6 (4.5); F5, 7.5 (5); F6, 6 (5.5); clava, 34.8 (8.7).

Mesosoma ( Fig. 15 ) with pronotum short; mesoscutum relatively flat with shallow polygonal-rounded reticulate sculpture, 0.69× as long as broad; scutellum 1.1× as long as broad, distinctly shorter than mesoscutum, sculpture on scutellum similar to that of mesoscutum but a little larger and shallower. Fore wing ( Fig. 16 ) 2.5× as long as broad, submarginal vein with an indistinct hyaline break at distal end, marginal vein 0.9× as long as stigmal vein, postmarginal vein 0.6× as long as stigmal vein; base of fore wing with a small triangular speculum; linea calva completely open posteriorly, filum spinosum present. Mesotibial spur ( Fig. 17 ) 0.33× as long as mesotibia, longer than the longer side of corresponding basitarsus and shorter than two corresponding basal tarsi combined. Relative length (width): fore wing, 171.4 (68.5); MV, 7.2; PMV, 4.8; SV,8; hind wing, 110 (35.5); mesotibia, 71; mesotibial spur, 23.4.

Metasoma ( Fig. 18 ) slightly longer than mesosoma (1.1×). Cerci situated in the distal third of metasoma. Hypopygium not reaching the apex of metasoma. Ovipositor starting under medial portion of T5, barely exerted at apex, 0.32× as long as metasoma and 0.38× as long as mesotibia; third valvula separated from second valvifer and 0.9× as long as the latter. Relative lengths: metasoma, 84; ovipositor, 27.

Male. Unknown.

Host. Unknown.

Distribution. China (Xizang).

Variation. No significant differences were found in available material.

Comments. This species is very similar to C. oreinos due to the mesoscutum and scutellum with similar reticulate sculpture; antenna with scape shorter than clava, F1 distinctly longer than broad and shorter than pedicel, clava 1-segmented and strongly obliquely truncated at apex, but can be distinguished from the latter by the following combination of characters: metasoma yellow at base and gradually becoming yellowish brown to brown distad (vs dark brown with slight violet bronzy lustre); ovipositor relatively short, 0.36–0.42× as long as mesotibia (vs 0.51×); truncated part of clava 0.78–0.92× length of clava (vs 0.5–0.75×); and differences on leg coloration.

Figures

FIGURES 13–18. Copidosoma linzhiensis sp. nov., holotype ♀ (No. E1408-01): 13, head, frontal view; 14, antenna; 15, mesosoma; 16, fore wing; 17, legs; 18, metasoma.Scale bars=100µm.