Petiolon cephalotes Kasparyan, 2020

Kasparyan, D. R., 2020, A new ichneumonid genus (Hymenoptera: Ichneumonidae: Ctenopelmatinae) from the south of Russian Far East, Zoosystematica Rossica (China) 29 (2), pp. 296-300 : 299

Petiolon cephalotes Kasparyan , sp. nov.

( Figs 1–8)

Holotype. Female, Russia, Primorsky Terr., 20 km SW of Putsilovka, Monakino , forest, meadows, 24–28. VI.1993, coll. S.A. Belokobylsky ( ZIN).

Paratype. Russia, Primorsky Terr., Krasnoarmeysky Distr., Mel’nichnoe , 22–30. VI .2001, coll. A.G. Kirejtshuk, 1 female ( ZIN) .

Description. Female (holotype). Fore wing 6.0 mm long. Antenna with 27 flagellomeres; first flagellomere about 1.2 times as long as second flagellomere. Antenna blackish with scape ventrally and apical half of flagellum (flagellomeres 14–27) completely light yellow ( Fig. 1). Head and mesosoma black; face yellow except for short median black stripe above ( Fig. 3); lower 0.3 of frontal orbit, clypeus, malar space and lower 0.2 of temple ( Fig. 1), mouth parts except for brownish mandibular teeth, small spot on hind corner of pronotum, tegula, basal plates of fore wing, fore and mid coxae, trochanters and all trochantelli whitish yellow. Fore and mid legs light yellow. Hind leg with coxa and femur blackish (apical edge of coxa and extreme base of femur light yellow), tibia and tarsus brown, tarsomeres pale at extreme bases. First metasomal tergite black with hind margin brownish; tergites 2–4 blackish brown with posterior part reddish brown correspondingly at 0.15, 0.25 and 0.4 of their length; subsequent tergites, ovipositor sheath and all sternites yellowish brown. Hind margins of tergites 4 (or 5) to 6 dorsally with distinct broad yellowish membranous emargination ( Fig. 7).

Male. Unknown.

Etymology. The species name derives from the Latin “ cephalotus ” referring to the large head.