Leptophion

Shimizu, So & Watanabe, Kyohei, 2015, Discovery of the genus Leptophion Cameron, 1901, from Japan and the Palaearctic region, with description of two new species (Hymenoptera: Ichneumonidae: Ophioninae), Zootaxa 4000 (1), pp. 111-122 : 120

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.

Figures

FIGURES 3 – 13. Details of Japanese species of Leptophion. 3 – 5, 9, 11. L. parvus sp. nov. (holotype): 3. head, frontal view; 4. head, lateral view; 5. head, dorsal view; 9. hamuli of right hind wing, dorsal view; 11. pecten of right hind tarsal claw, lateral view. 6 – 8, 10, 12, 13. L. septentrionis sp. nov. (6 – 8, 10, 13. paratype; 12. holotype): 6. head, frontal view; 7. head, lateral view; 8. head, dorsal view; 10. hamuli of right hind wing, dorsolateral view; 12. pecten of right hind tarsal claw, lateral view; 13. mesosoma (surface sculptures on mesonotum, scutellum, and postscutellum omitted), lateral view.

FIGURES 14 – 17. Wing cells of Japanese species of Leptophion. 14 – 15. L. parvus sp. nov. (holotype): 14. discosubmarginal cell of fore wing; 15. marginal cell of hind wing. 16 – 17. L. septentrionis sp. nov. (holotype): 16. discosubmarginal cell of fore wing; 17. marginal cell of hind wing.