Exochus argutus Tolkanitz, 1993

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 : 2345-2347

Exochus argutus Tolkanitz, 1993

( Figures 4a , 7a )

Exochus argutus Tolkanitz, 1993: 106 – 120 . Type: male; Type depository: SIZ.

Specimens examined

( South Korea) 1 male, GN Gajisan, 28 June 1989, J.G. Kim.

Diagnosis

Male. Body length 9.0 mm. Antenna with 38 flagellomeres.

Head strongly convex, upper face with projection ( Figure 4a ); between antennal sockets with vertical ridge; dorsal margin of eyes with triangular yellow spots. Malar space black. Pronotum glabrous except sub-upper area, strongly sunken; epomia absent. Scutellum and postscutellum black. Propodeum with area superomedia ( Figure 7a ); area externa with hair; area superomedia and area dentipara with sparse hairs; spiracle of propodeum oval; metapleuron glabrous. Vein cu-a of hindwing intercepted at lower 0.3, with vein Cu1. Tergite 1 with distinct dorsal longitudinal carina, reach central area of tergite 1, weak up-curve in basal area, median area of tergite 1 without hair. Tergite 3 with epipleuron wedge-shaped, the basal part straight or weakly convex.

Distribution

South Korea (new record), Belarus, Mongolia, Russia, Ukraine.

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.