Exochus lineifrons Thomson, 1887

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 : 2353

Exochus lineifrons Thomson, 1887

( Figures 4k , 7k )

Exochus lineifrons Thomson, 1887: 193 – 218 . Type: unknown; Type depository: ZI.

Specimens examined

( South Korea) 1 female, CN, Seosan-si, Haemi-myeon, Daegok-ri, Hanseo Univ ., 7 May 2013, J.G. Kim; 1 female, JN, Jeongeup-si, Jangseong-gun, Bukha-myeon, Namohanggol, 22 June 2005, J.G. Han.

Diagnosis

Female. Forewing 4.5 mm, body 5.0 mm long.

Lower face black and upper face yellow ( Figure 4k ). Yellow triangular marks and yellow inner orbits confluent. Mandible and malar space yellow. Antenna with 32 flagellomeres; antenna dark blackish brown. Mesosoma black. Upper margin of pronotum yellow. Scutellum weak convex and black and yellow. Propodeum with lateromedian longitudinal carinae and costula ( Figure 7k ); area basalis and area superomedia not separated by carina. Fore and mid legs yellow. Hind coxa dark reddish brown, hind femur and tibia brown, tibia with yellow line in dorsal view, tarsus yellow. 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 line of tergite 2 glabrous. Epipleuron of third metasomal tergite semicircular.

Distribution

South Korea (new record), Finland, Georgia, Germany, Hungary, Moldova, Poland, Sweden, Turkey, 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.