Exochus pictus Holmgren, 1858

Lee, Jin-Kyung Choi and Jong-Wook, 2021, Four newly recorded species of the genus Exochus (Hymenoptera: Ichneumonidae: Metopiinae) from South Korea, Journal of Species Research 10 (4), pp. 412-418 : 416-417

3. Exochus pictus Holmgren, 1858 ( Fig. 3 )

ḄOiḆṚṢḡḘḏnjffi (ljḓ)

Exochus pictus Holmgren, 1858: 305-394 . Type: unknown.

Diagnosis. Generally black ( Fig. 3A ). Face sparsely punctate with dense hairs, face pale yellow with large brown spot on the middle of face ( Fig. 3B ); apical margin of clypeus truncate, corner of clypeus round; malar space and mandible pale yellow; inner orbits with yellow line from frons to vertex ( Fig. 3C ); occipital carina present; hind head and temple shiny. Antenna with 24 flagellomeres and blackish brown with dense hairs. Pronotum black and shiny, upper area with yellow line ( Fig. 3D ); mesoscutum sparsely punctate with notaulus only anterior part; tegula yellow; mesoscutellum and postscutellum dark brown; basal and areola area not separated and glabrous, costula present, median longitudinal carinae incomplete ( Fig. 3F ); spiracle oval, not reach to pleural carina; metapleuron grabrous. Hind wing with eight distal hamuli. Fore and mid legs yellow; hind leg brown, coxa darken. Hind tarsal claw simple. Ovipositor as long as hind tibia and longer than width of apical tergite ( Fig. 3G ).

Material examined. SOUTH KOREA: Daegu-si , Dalseong-gun , Youga-myeon , Yong-ri, Mt. Biseulsan, 20.ix. 1997, 1$(Deposited in NIBR) ; BULGARIA: Madjarovo , 200 m, 21.x.2000, leg. J. Kolarov, 1$ (Deposited in DNUE-IIEI) .

Distribution. South Korea (new record), Austria, Azerbaijan, Belgium, Bulgaria, Canada, Czech Republic, Czechoslovakia, Finland, Germany, Greece, Hungary, Ireland, Latvia, Lithuania, Netherlands, Norway, Poland, Romania, Russia, Spain, Sweden, U.S.A., Ukraine, United Kingdom.

Region. Eastern and Western Palearctic, Nearctic.

Host record. Heterarthrus nemoratus ( Hymenoptera : Symphyta) ( Townes and Townes, 1959).

Figures

Fig. 3. Exochus pictus Holmgren, 1858. A. habitus of female in lateral view; B. head in frontal view; C. head in dorsal view; D. mesosoma in lateral view; E. wings; F. propodeum; G. ovipositor. Scale bars:A, 1.0 mm; B, C, G, 0.2 mm; D-F, 0.5 mm.