Exochus momoii Tolkanitz, 2007 (Figures 5a, h) Exochus momoii Tolkanitz, 2007: 343. Exochus a ffi nis Momoi and Kusigemati, 1970: 414. Type: male; Type depository: HU. Specimens examined (South Korea) 2 males, Seoul Korea Univ., Imyeupsi, SukwoanD, 1 August 1987, ICH.; 3 males, JB Namwon-si, Sannae-myeon, Baemsagol, 35°21 ′ 55 ″ N, 127°34 ′ 58 ″ E, 31 July 1992; 7 males, GB Gunwi-gun, Bugye-myeon, Dongsan-ri, Odoam (M. T.), 36°01 ′ 29 ″ N, 128°41 ′ 31 ″ E, 21 July – 10 August 2015, J.W. Lee. Diagnosis Male. Body length 5.0 – 6.0 mm. Antenna with 39 flagellomeres. Head convex, upper face with long projection and recurved; between antennal sockets without vertical ridge; apical margin of clypeus concave; dorsal margin of eyes with triangular yellow spots, connected to margin between antennal socket and eye. Face, clypeus and malar space yellow (Figure 5a). Scutellum and postscutellum yellow. Propodeum without area superomedia, basal transverse carina incomplete (Figure 5h); area externa with sparse hairs; area dentipara glabrous; spiracle of propodeum ellipse, metapleuron glabrous. Vein cu-a of hindwing intercepted at lower 0.1, with vein Cu1 trace. Tergite 1 with dorsal longitudinal carinae, reach over at central area of tergite 1, almost parallel; between dorsal longitudinal carinae without hair. Tergite 3 with epipleuron wedge-shaped, the basal part not convex. Distribution South Korea (new record), Japan, Russia.

Published as part of 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, pp. 2327-2367 in Journal of Natural History 50 on page 2354, DOI: 10.1080/00222933.2016.1197335, http://zenodo.org/record/3993034