Exochus britannicus Morley, 1911

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 : 2347

Exochus britannicus Morley, 1911

( Figures 4b , 7b )

Exochus britannicus Morley, 1911: 1 – 344 . Type: male; Type depository: NHM.

Specimens examined

( South Korea) 1 male, GW Inje-gun, Bangdaesan, Maehwa-dong, 26 June 1996, J.W. Lee; 1 male, GG Eljeongbu-si, Sanghowon, 11 June 1998, C.Y. Yoon.

Diagnosis

Male. Body length 8.0 – 8.5 mm. Antenna with 39 flagellomeres.

Head strongly convex, upper face with long projection and recurved; between antennal sockets with vertical ridge; dorsal margin of eyes with triangular yellow spots; margin between antennal sockets and eye yellow. Malar space yellow ( Figure 4b ). Pronotum sunken and glabrous except sub-upper area; epomia absent. Scutellum and postscutellum yellow. Propodeum without area superomedia, area basalis and area superomedia not separated from carina ( Figure 7b ); area externa sparsely punctate with hairs; area superomedia and area dentipara glabrous; spiracle of propodeum oval, not connected pleural carina; metapleuron with sparse hairs. Vein cu-a of hindwing intercepted at lower 0.3, with vein Cu1. Tergite 1 with distinct dorsal longitudinal carinae, reach central area of tergite 1, upcurved in basal area; between dorsal longitudinal carinae glabrous. Tergite 3 with epipleuron semicircular.

Distribution

South Korea (new record), Hungary, Kazakhstan, Moldova, Poland, Romania, Russia, Turkey, Turkmenistan, Ukraine, United Kingdom.

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.