Exochus gratus Tolkanitz, 2003

Choi, Jin-Kyung, Kolarov, Janko & Lee, Jong-Wook, 2016, A taxonomic review of the genus Exochus Gravenhorst (Hymenoptera: Ichneumonidae: Metopiinae) from South Korea with descriptions of ten new species, Journal of Natural History 50, pp. 2327-2367 : 2350-2351

Exochus gratus Tolkanitz, 2003

( Figures 4g , 7g )

Exochus gratus Tolkanitz, 2003: 1075 – 1085 . Type: female; Type depository: ZIN .

Specimens examined

( South Korea) 1 male, GB, Cheongdo-gun, Unmun-myeon, Unmunsan U2, 30 May – 16 June 2009, J.W. Lee.

Diagnosis

Male. Forewing 3.0 mm, body 3.5 mm long.

Face dark brown and upper part of face yellow ( Figure 4g ). Mandible yellow and malar space dark brown. Vertex with small circular yellow spots. Antenna with 20 flagellomeres; antenna dark blackish brown. Mesosoma black. Upper margin of pronotum dark brown. Scutellum almost flat and black. Propodeum without costula and lateromedian longitudinal carinae incomplete ( Figure 7g ); area basalis and area superomedia not separated by carina. Fore and mid legs brown to dark reddish brown. Hind leg reddish brown to dark brown, tibia with black band apically. Vein Cu-a of forewing distad of vein Rs+M. Vein 2 rs-m as long as vein between 2 rs-m and 2 m-cu. Vein cu-a of hindwing intercepted at lower part, vein Cu1 of hindwing vestigial. Area between median longitudinal carinae of tergite 1 glabrous, median longitudinal carinae short. Tergite 2 sparsely punctate. Epipleuron of third metasomal tergite semicircular.

Distribution

South Korea (new record), Russia.

Figures

Figure 4. Head in frontal view. (a) Exochus argutus; (b) Exochus britannicus; (c) Exochus consimilis; (d) Exochus destitutus; (e) Exochus flavomarginatus; (f) Exochus frontellus; (g) Exochus gratus; (h) Exochus gravipes; (i) Exochus guttatus; (j) Exochus lictor; (k) Exochus lineifrons; (l) Exochus mitratus. Scale bar = 0.2 m m.

Figure 7. Propodeum in dorsal view. (a) Exochus argutus; (b) Exochus britannicus; (c) Exochus consimilis; (d) Exochus destitutus; (e) Exochus flavomarginatus; (f) Exochus frontellus; (g) Exochus gratus; (h) Exochus gravipes; (i) Exochus guttatus; (j) Exochus lictor; (k) Exochus lineifrons; (l) Exochus mitratus. Scale bar = 0.2 m m.