Gnathochorisis Förster, 1869

Ranjith, A. P., Humala, Andrei E. & Priyadarsanan, Dharma Rajan, 2022, First records of two orthocentrine genera (Hymenoptera: Ichneumonidae) from India with description of two new species, Zootaxa 5155 (3), pp. 414-422 : 415

Key to the Indomalayan species of Gnathochorisis Förster, 1869

1. Second metasomal tergite as long as wide posteriorly; fore wing with closed areolet; area superomedia longer than wide; propodeum without anterior section of lateromedian longitudinal carinae; first flagellomere 5.3 × as long as wide; face, frontal orbits and pronotum yellow; body slender........................................................ G. malaisei Humala

– Second metasomal tergite clearly transverse ( Fig. 2B ); fore wing without areolet ( Fig. 2C ); area superomedia distinctly wider than long ( Fig. 1F ); propodeum with anterior section of lateromedian longitudinal carinae ( Fig. 1F ); first flagellomere 4.3–4.7 × as long as wide; face, frontal orbits and pronotum fuscous ( Figs 1A, B, D ); body more robust....................... 2

2. Area superomedia 1.25 × as wide as long; lower face smooth medially; clypeus 1.6 × as wide as high; hind femur 3.0 × as long as wide................................................................................. G. leleji Humala

– Area superomedia 1.8 × as wide as long ( Fig. 1F ); lower face transversely striate medially ( Fig. 1B ); clypeus 2.0 × as wide as high ( Fig. 1B ); hind femur 3.6 × as long as wide................................................ G. jasoni sp. nov.

Figures

FIGURE 1. Gnathochorisis jasoni sp. nov., holotype, female A) habitus, lateral view; B) head, anterior view; C) head, dorsal view; D) head & mesosoma, lateral view; E) mesosoma, dorsal view; F) propodeum, dorsal view.

FIGURE 2. Gnathochorisis jasoni sp. nov., holotype, female A) metasoma, lateral view; B) metasoma, dorsal view; C) wings.