Pion Schiødte, 1839

Watanabe, Kyohei, 2016, First record of the genus Pion Schiødte, 1839 (Hymenoptera: Ichneumonidae: Ctenopelmatinae), from Japan, with description of a new species, Zootaxa 4103 (3), pp. 289-294 : 290

Genus Pion Schiødte, 1839

Pion Schiødte, 1839: 318 . Type species: Mesoleptus fortipes Gravenhorst, 1829 . Monobasic.

Catoglyptus Holmgren, 1855: 106 . Type species: Mesoleptus fortipes Gravenhorst, 1829 . Designated by Viereck (1912).

Diagnosis. Clypeus weakly convex with a strong submarginal impression, the margin sharp. Anterior tentorial pit open, strongly impressed ( Fig. 1 ). Lower mandibular tooth much longer than upper tooth ( Fig. 1 ). Outer surface of mandible without a basal transverse impression. Subbasal part of lower edge of mandible sharp. Lower part of occipital carina complete, joining hypostomal carina above base of mandible. Notaulus absent or indistinct. Upper end of epicnemial carina close to anterior margin of mesopleuron. Areolet absent. Vein 1- cu + cu-a of hind wing inclivous ( Fig. 8 ). Tarsal claws simple. Propodeal carinae well developed except for anterior transverse carina absent ( Fig. 2 ). Propodeal spiracle weakly elongate. T1 slender, decurved, expanded posteriorly ( Figs 3 , 9 ). Glymma absent. T2 without thyridium. Ovipositor strongly upcurved ( Fig. 9 ) and very slender except for base.

Distribution. Palearctic and Oriental regions.

Figures

FIGURES 1 – 7. Pion japonicum sp. nov., 1 – 3, female (holotype): 4 – 7, male (paratype). 1, head, frontal view, surface sculptures omitted except for left half of clypeus; 2, propodeum, dorsal view, surface sculptures omitted except for left half of dorsal face; 3, T 1, dorsal view; 4, subgenital plate, ventral view; 5, 6, genital capsule, dorsal (5) and ventral (6) view; 7, right aedeagus, lateral view.

FIGURES 8 – 10. Pion japonicum sp. nov. 8, female (holotype), dorsal habitus; 9, female (paratype), lateral habitus; 10, male (paratype), lateral habitus. Scale bar: 2.0 mm.