Tersilochus (Tersilochus) uncinatus 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 : 46-48

Tersilochus (Tersilochus) uncinatus Khalaim & Lee sp. n. Figs 62-70

Description.

Female (holotype). Body length 3.9 mm. Fore wing length 3.05 mm.

Head roundly narrowed behind eyes in dorsal view (Fig. 63); temple almost 0.8 times as long as eye width. Inner eye orbits parallel (Fig. 62). Mandible with upper tooth longer than lower tooth. Clypeus lenticular, 2.75 times as broad as long, with lower 0.3 bent backwards (Fig. 62), in profile weakly convex, finely granulate and with few indistinct punctures in upper 0.7. Malar space almost as long as basal width of mandible. Flagellum of antenna filiform, with 17 segments (Fig. 64); subbasal flagellomeres 1.4-1.5 times and subapical flagellomeres 1.2-1.3 times as long as broad; flagellomeres 3-6 with distinct subapical finger-shaped structures on outer surface (Fig. 65, arrows). Face, frons, vertex, and temple distinctly granulate, dull, and impunctate (Figs 62, 63). Mesosoma entirely granulate, dull, and impunctate; mesopleuron without striae (Fig. 66). Notaulus absent (Fig. 63). Foveate groove absent (Fig. 66). Propodeum with basal keel, which is 0.34 times as long as apical area (Fig. 67). Propodeal spiracle small, separated from pleural carina by half diameter of spiracle (Fig. 66). Apical area flat, anteriorly rounded (Fig. 67). Apical longitudinal carinae well-developed posteriorly and weak anteriorly near transverse carina. Fore wing (Fig. 69) with intercubitus moderately thickened, longer than abscissa of cubitus between intercubitus and second recurrent vein. First abscissa of radius longer than width of pterostigma. Metacarpus not reaching apex of fore wing. Postnervulus intercepted slightly below middle. Hind wing with nervellus vertical. Metasoma: first tergite 2.7 times as long as broad posteriorly (Fig. 70), mostly smooth, with petiole trapeziform in cross-section, finely striate laterally before glymma, and postpetiole well separated from petiole in dorsal view. Glymma deep, situated slightly behind center of first tergite, joining by distinct furrow to ventral part of postpetiole. Second tergite as long as anteriorly broad (Fig. 70). Thyridial depression short, distinctly transverse (Fig. 70). Ovipositor slen der, weakly upcurved in basal 0.8, somewhat thickened subapically, with apex thin, strongly upcurved, and with weak dorsal notch (Fig. 68, arrow); sheath about 3.0 times as long as first tergite.

Head (including clypeus), mesosoma, and first tergite black; palpi brown; mandible fuscous basally and with reddish black teeth; tegula yellow. Antenna entirely black. Pterostigma brown with white spot on distal corner. Legs brown; hind leg with coxa and base of first trochanter strongly darkened with brown. Metasoma behind first tergite brownish black.

Male. Unknown.

Comparison.

Differs from other Korean species of the genus Tersilochus by the long ovipositor with apex thin and strongly upcurved (Fig. 68).

Type material.

Holotype female, South Korea, Gyeongnam-do (GN), Sancheong-gun, Samjang-myeon, Yu Pyeongni, Wangdeungjae, 16. VI– 20.IX.2008 (YUG).

Distribution.

South Korea.

Etymology.

Named after the Latin uncinatus (hooked), on account of its apically strongly upcurved ovipositor.