Discovery of the genus Leptophion Cameron, 1901, from Japan and the Palaearctic region, with description of two new species (Hymenoptera: Ichneumonidae: Ophioninae) Author Shimizu, So Author Watanabe, Kyohei text Zootaxa 2015 4000 1 111 122 journal article 10.11646/zootaxa.4000.1.5 795cfeae-aecb-48ad-98b4-41f924bbab14 1175-5326 235591 10B33B13-6E22-486A-9B85-C08934401B30 Key to Japanese and Taiwanese species of Leptophion 1. Hind wing with uniform shaped hamuli on R 1, its penultimate hamulus not elongate. Proximal areas of marginal cell and second subdiscal cell of fore wing with a clouded area. The angle of an intersection of two veins of hind wing, R 1 and Rs , about 45°............................................................................ L. radiatus ( Uchida, 1956 ) –. Hind wing without uniform shaped hamuli on R 1, its penultimate hamulus significantly elongated ( Figs 9, 10 ). Proximal area of marginal cell with a clouded area ( Figs 14, 16 ). Second subdiscal cell of fore wing without a clouded area ( Figs 15, 17 ). The angle of an intersection of two veins of hind wing, R 1 and Rs , about 90° ( Figs 15, 17 )............................... 2 2. Pterostigma with a transpicuous membranous area ( Fig. 14 ). Mesopleuron strongly polished. Body small, length of fore wing 13.5 mm .............................................................. L. parvus Shimizu & Watanabe sp. nov. –. Pterostigma without a transpicuous membranous area ( Fig. 16 ). Mesopleuron various ( Fig. 13 ). Body large, length of fore wing 15.0–18.0 mm.................................................................................... 3 3. Mesopleuron strongly polished without wrinkles. AI, 1.3–1.7......................... L. maculipennis ( Cameron , 1905 ) –. Mesopleuron with longitudinal wrinkles ( Fig. 13 ). AI, 1.0................. L. septentrionis Shimizu & Watanabe sp. nov.