Tersilochus (Tersilochus) gangwonus Khalaim & Lee

Khalaim, Andrey I., Balueva, Ekaterina N., Kim, Ki-Beom & Lee, Jong-Wook, 2014, Review of the genus Tersilochus Holmgren (Hymenoptera, Ichneumonidae, Tersilochinae) from South Korea, Journal of Hymenoptera Research 36, pp. 27-51 : 32-34

Tersilochus (Tersilochus) gangwonus Khalaim & Lee sp. n. Figs 5-14

Description.

Female (holotype). Body length 4.2 mm. Fore wing length 3.35 mm.

Head strongly rounded behind eyes in dorsal view (Fig. 6); temple 0.75 times as long as eye width. Inner eye orbits weakly but distinctly convergent dorsally (Fig. 5). Mandible with upper tooth longer than lower tooth. Clypeus lenticular, 2.5 times as broad as long, in profile convex, with lower 0.4 bent backwards (Fig. 5); sparsely punctate, finely granulate, and dull in upper 0.7. Malar space about as long as basal width of mandible. Flagellum of antenna filiform, with 19 segments (Fig. 7); subbasal flagellomeres 1.4-1.5 times as long as broad, subapical flagellomeres slightly elongate; flagellomeres 4 to 6 with distinct subapical finger-shaped structures on outer surface (Fig. 8, arrows). Face, frons, vertex, and temple distinctly granulate, dull, and impunctate (Figs 5, 6). Mesosoma entirely densely granulate, dull, and impunctate (Fig. 9); mesopleuron centrally with fine oblique or horizontal striae on granulate background. Notaulus absent. Foveate groove weak, narrow, and short. Propodeum mediodorsally with fine longitudinal wrinkles (Fig. 10); basal part 0.35 times as long as apical area. Propodeal spiracle separated from pleural carina by 0.7-1.0 times diameter of spiracle. Apical area flat, anteriorly widely rounded (Fig. 10). Apical longitudinal carinae anteriorly weak. Fore wing (Fig. 11) with intercubitus thickened, about as long as abscissa of cubitus between intercubitus and second recurrent vein. First abscissa of radius distinctly longer than width of pterostigma. Metacarpus ending far from apex of fore wing. Postnervulus intercepted below middle. Hind wing with nervellus vertical. Metasoma: first tergite 2.7 times as long as broad posteriorly, mostly smooth; petiole trapeziform in cross-section, well separated from postpetiole in dorsal view, finely striate laterally before glymma. Glymma deep, situated somewhat behind center of first tergite, joining by distinct furrow to ventral part of postpetiole (Figs 9, 12). Second tergite as long as anteriorly broad (Fig. 13). Thyridial depression short, as long as broad in the holotype (Fig. 13) and transverse in the paratype. Ovipositor short and robust, weakly upcurved, clavate, with rather sharp dorsal subapical notch (Fig. 14); sheath 0.85 times as long as first tergite.

Head, mesosoma, and first tergite black; palpi and lower 0.4 of clypeus brown; mandible yellow-brown, fuscous basally, and with reddish teeth; tegula yellow. An tenna entirely black. Pterostigma brown. Legs brownish yellow; coxae brownish black, first trochanters brownish. Metasoma behind first tergite dark brown.

Male. Unknown.

Comparison.

Differs from other Korean species of the genus Tersilochus by the combination of inner eye orbits convergent dorsally (Fig. 5), and short and clavate ovipositor apically with rather sharp dorsal subapical depression (Figs 12, 14).

Variation.

Paratype corresponds well with the holotype but has somewhat less clavate ovipositor and shorter thyridial depression.

Type material.

Holotype female, South Korea, Gangwon-do (GW), Taebaek-si, Sodo-dong Mt. Taebaek, Danggol valley, 37°05'N, 128°56'E, 5.V.1999, coll. J.W. Lee (YUG).

Paratype. 1 female (ZISP), South Korea, Gangwon-do (GW), Taebaek-si, Hyeol-dong, Mandeoksa, 37°07'06"N, 128°56'52"E, 6.V.1999, coll. J.W. Lee.

Distribution.

South Korea.

Etymology.

Named after the type locality, Gangwon province of South Korea.