Lathrolestes nigronitens, Reshchikov, Alexey, 2012

Reshchikov, Alexey, 2012, Review and key to Russian Far East Lathrolestes (Hymenoptera, Ichneumonidae), Zootaxa 3414, pp. 1-32 : 12

Lathrolestes nigronitens sp. nov.

Figs 25–32 .

Diagnosis. This species differ from the closely related L. luteolator by smaller size, small petiolate areolet; shorter head, narrowed behind the eyes ( Fig. 32 ); distinctly punctate flat face ( Fig. 25 ); smooth tergites of metasoma ( Fig. 28 ). Body mostly dark ( Fig. 27 ).

Description. Female. Body length 4 mm. Antenna with 26–29 flagellomeres. Scape 0.56 × as long as wide. Head narrowed behind the eyes ( Fig. 32 ), matt. Maximum length of temple 0.63X transverse eye diameter; minimum length of temple 0.53 ×. Face as wide as height of eye; flat, medially bulging, with rare distinct punctures ( Fig. 25 ). Clypeus not separate from face; at apex projecting anteriorly; apical margin of clypeus moderately obtuse. Clypeal foveae small. Malar space 0.5 × basal mandible width. Occipital carina complete, not interrupted above. Lower mandible tooth longer than upper.

Notaulus defined at base. Mesopleuron and mesonotum with rare distinct punctures ( Fig. 31 ). Claws pecinate at base. Fore wing with areolet petiolate, small. Radius intercepting stigma at its middle ( Fig. 29 ). Nervellus intercepted below middle. Nervulus postfurcal. Propodeal carinae complete ( Fig. 26 ).

Metasoma rather shining, smooth. First metasomal tergite 0.7 × as long as apically wide; with median longitudinal impression; bordered by lateral longitudinal carinae; median longitudinal carinae defined beyond the middle of tergite. Ovipositor stout at base, with shallow notch ( Fig. 30 ).

Color. Female. Body black ( Fig. 27 ); Orbits, malar space, mandibles, tegulae, legs except hind tibia and tarsus reddish-yellow ( Figs 25, 27 , 32 ).

Variation: Some individuals with more yellow-reddish coloration

Material: Holotype female, Russia, Jewish Autonomous Oblast, Londoko, 1.viii.1981, Kasparyan, ( ZIN); Paratypes: 1 female, Russia, Primorskiy Kray, Mt. Lozoviy, 10 km. SSW Partizansk, 12.vii.1996, S.A. Belokobylskij; female, Russia, Primorskiy Kray, 20 km. NNE Partizansk, 9.vii.1996, S.A. Belokobylskij; 2 females, Russia, Primorskiy Kray, Khasan District, spring Narva, SW Barabash, 5.viii.1978, D.R. Kasparyan; 1 female, Russia, Primorskiy Kray, 20 km SW Krounovka, 2–5.viii.1993, S.A. Belokobylskij; 1 female, Russia, Primorskiy Kray, 20 km SE Ussuriysk, at light, 31.vii.1991, S.A. Belokobylskij; 1 female, Russia, Primorskiy Kray, Vladivostok, Morskoe Kladbiscshe, 13.viii.1993, S.A. Belokobylskij; 1 female, Russia, Primorskiy Kray, Andreevka, 30 km SW Slovyanka, 28.viii.2003, S.A. Belokobylskij; 1 female, Russia, Primorskiy Kray, Spassky, Evseevka, 25 km SE Spassk-Dalniy, 28.vi.1985, D.R. Kasparyan; 1 female, Russia, Primorskiy Kray, Sukhanovka, 25 km SW Slavyanka, 29.viii.2003, S.A. Belokobylskij, ( ZIN); 1 male, South Korea, Chuncheon, GW, Kangwon National University, at light, 16.viii.1996, Sinev. (all in ZIN).

Distribution: Far East of Russia.

Etymology: The species epithet, nigronitens , refers to the coloration and the surface of body.

Figures

FIGURES 25 – 27. Lathrolestes nigronitens sp. nov. 25 — face; 26 — propodeum; 27 — habitus.

FIGURES 28 – 32. Lathrolestes nigronitens sp. nov. 28 — second tergite of metasoma; 29 — pterostigma; 30 — ovipositor; 31 — mesopleuron; 32 — head.