Heterischnus Wesmael, 1859

Rousse, Pascal, van Noort, Simon & Diller, E., 2013, Revision of the Afrotropical Phaeogenini (Ichneumonidae, Ichneumoninae), with description of a new genus and twelve new species, ZooKeys 354, pp. 1-85 : 41-42

Heterischnus Wesmael, 1859

Aethiopischnus Heinrich, 1938; Ischnopsidea Viereck, 1914; Posocentrus Provancher, 1875; Rhexidermus Förster, 1869.

Diagnosis.

Heterischnus is a very distinct genus of Phaeogenini and can be separated from other genera in the tribe by the combination of the following characters: mandible unidentate and falciform; clypeus separated from face laterally by a deep groove encompassing anterior tentorial pits; basal flagellar segments slender and long; vertex long and slightly convex behind ocelli; hypostomal carina joining occipital carina distinctly at or above mandibular base; epicnemial carina strongly raised ventrally and flexed over the base of the fore coxae; notaulus distinct anteriorly, deep and long; fore wing with areolet closed, hind wing with distal abscissa of Cu1 present and connected to 1/Cu& cu–a; tarsal claws simple; gastrocoelus nearly indistinct to deep, thyridiae wide; ovipositor extending relatively strongly beyond apex of metasoma ( Perkins 1959, Selfa and Diller 1994).

Species richness and distribution.

The genus is represented by 28 species in the Afrotropical, Nearctic and Palearctic regions, with three described Afrotropical species. We add here one species from Southern Africa and one from Tanzania.