Tersilochus (Tersilochus) obstinatus Khalaim & Lee, 2014

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 : 38-40

publication ID

https://dx.doi.org/10.3897/jhr.36.6548

publication LSID

lsid:zoobank.org:pub:EA8A0BAB-634F-4860-9E75-F8FB53179509

persistent identifier

https://treatment.plazi.org/id/CCB8684F-8DD3-48AB-99E2-57DFABEB0AB6

taxon LSID

lsid:zoobank.org:act:CCB8684F-8DD3-48AB-99E2-57DFABEB0AB6

treatment provided by

Journal of Hymenoptera Research by Pensoft

scientific name

Tersilochus (Tersilochus) obstinatus Khalaim & Lee
status

sp. n.

Tersilochus (Tersilochus) obstinatus Khalaim & Lee sp. n. Figs 31 View Figures 31–37 -40 View Figures 38–44

Description.

Female (holotype). Body length 4.5 mm. Fore wing length 3.35 mm.

Head very strongly rounded behind eyes in dorsal view ( Fig. 33 View Figures 31–37 ); temple short, almost 0.6 times as long as eye width. Inner eye orbits weakly but distinctly convergent dorsally ( Fig. 32 View Figures 31–37 ). Mandible with upper tooth distinctly longer than lower tooth. Clypeus probably abnormal, with lower margin abruptly bent backwards ( Fig. 32 View Figures 31–37 ); distinctly and sparsely punctate on finely granulate and dull background. Malar space 0.85 times as long as basal width of mandible. Flagellum of antenna filiform, with 18 segments ( Fig. 31 View Figures 31–37 ); subbasal flagellomeres about 1.5 times as long as broad, subapical flagellomeres slightly elongate; flagellomeres 3 to 7 with distinct subapical finger-shaped structures on outer surface ( Fig. 34 View Figures 31–37 ). Face, frons, vertex, and temple distinctly granulate, dull, and impunctate. Mesosoma entirely granulate, dull, and mostly impunctate; mesoscutum laterally with indistinct punctures. Notaulus absent. Foveate groove situated in anterior half of mesopleuron, not reaching prepectal carina anteriorly, almost straight, narrow, slightly oblique, with transverse wrinkles ventrally ( Fig. 31 View Figures 31–37 ). Propodeum with basal keel (and few fine subparallel wrinkles), which is 0.37 times as long as apical area ( Fig. 38 View Figures 38–44 ). Propodeal spiracle separated from pleural carina by 1.75 times diameter of spiracle. Apical area flat, anteriorly widely rounded ( Fig. 38 View Figures 38–44 ). Apical longitudinal carinae distinct only posteriorly, anteriorly absent. Fore wing ( Fig. 35 View Figures 31–37 ) with intercubitus thick, shorter than abscissa of cubitus between intercubitus and second recurrent vein. First abscissa of radius almost as long as width of pterostigma. Metacarpus ending far from apex of fore wing. Postnervulus intercepted somewhat below middle. Hind wing with nervellus vertical. Metasoma: first tergite 2.5 times as long as broad posteriorly ( Fig. 40 View Figures 38–44 ), with petiole trapeziform in cross-section, well separated from postpetiole in dorsal view, mostly smooth dorsally and laterally, finely striate laterally before glymma, and with postpetiole striate dorsally. Glymma deep, situated at center of first tergite, joining by distinct furrow to ventral part of postpetiole ( Fig. 39 View Figures 38–44 ). Second tergite as long as anteriorly broad ( Fig. 40 View Figures 38–44 ). Thyridial depression short, transverse ( Fig. 40 View Figures 38–44 ). Ovipositor short, weakly upcurved, with moderately deep and sharp dorsal subapical notch ( Fig. 37 View Figures 31–37 ); sheath about as long as first tergite ( Fig. 36 View Figures 31–37 ).

Head, mesosoma, and first tergite black; palpi and lower margin of clypeus yellowish brown; mandible yellowish brown, blackish basally and with black teeth; tegula yellow. Antenna brown. Pterostigma brown. Legs brownish yellow, hind coxa brownish. Metasoma behind first tergite brownish yellow ( Fig. 36 View Figures 31–37 ), tergites 3 to 5 dorsally with brown anterior marks.

Male. Unknown.

Comparison.

Differs from other Palaearctic species of Tersilochus by the combination of conspicuously enlarged eyes (temple short) ( Figs 32 View Figures 31–37 , 33 View Figures 31–37 ), short ovipositor ( Fig. 36 View Figures 31–37 ) and light brownish yellow metasoma behind first tergite ( Fig. 36 View Figures 31–37 ).

Type material.

Holotype female, South Korea, Chungnam-do, (CN), Daejeon, Dong-gu, Daejeon University, 35°31'17"N, 126°50'12"E, Malaise trap, 13-28.IV.2006 (YUG).

Distribution.

South Korea.

Etymology.

Named after the Latin obstinatus (firm, resolved, resolute, obstinate).