Leptophion Cameron , 1901

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 : 113

Genus Leptophion Cameron, 1901

Leptophion Cameron, 1901: 227 . Type species: Leptophion longiventris Cameron , by monotype. Spilophion Cameron, 1905: 124. Type species: Spilophion maculipennis Cameron , by monotype. Synonymized by Townes et al. (1961: 265).

Coiloneura Szépligeti, 1905: 35. Type species: Coiloneura melanostigma Szepligeti , by subsequent designation. Synonymized by Cushman (1947: 462).

Diagnosis. This genus can be distinguished from other genera of Ophioninae by the following combination of character states: (1) mandible not twisted, barely tapered, with sparsely long hairs, its apex dichotomy of axial symmetric teeth or upper tooth slightly longer than lower one ( Figs 3, 4, 6, 7 ); (2) clypeus strongly convex, its lateral profile of lower margin nearly straight to slightly convex ( Figs 3, 4, 6, 7 ); (3) occipital carina complete dorsally and laterally, its lower margin absent, without joined to oral carina ( Figs 4, 5, 7, 8 ); (4) posterior transverse carina of mesosternum complete ( Fig. 13 ), rarely interrupted in a few Australasian species; (5) tibial spur of fore leg without membranous flange; (6) mid and hind trochanters simple; (7) distal pecten of hind tarsal claws distinctly longer than true apex of claw and other pectens ( Figs 11, 12 ); (8) fore wing without sclerites ( Figs 1, 2 , 14–16 ); and (9) hind wing usually with an apparently elongated penultimate hamulus on R 1 ( Figs 9, 10 ) ( Townes, 1971; Gauld, 1977; Gauld & Mitchell, 1981).

Distribution. Australasian, Oceanic, Oriental, and Palaearctic (the south of Japan)*, regions. *New record. Bionomics. Host is unknown. Adult wasps are usually collected in light traps.

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 1, 2. Habitus of Japanese species of Leptophion. 1. L. parvus sp. nov. (holotype). 2. L. septentrionis sp. nov. (holotype).

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.