Conostigmus Dahlbom, 1858

Cui, Shanshan, Li, Fang, Huang, Yixin, Huang, Xuanzhi, Wang, Xu & Zhu, Chaodong, 2023, Description of a new species of Conostigmus Dahlbom, 1858 (Hymenoptera: Megaspilidae) from China, Zootaxa 5315 (1), pp. 71-76 : 72

Conostigmus Dahlbom, 1858

Type species: Conostigmus alutaceus ( Thomson, 1858)

Diagnosis. Male flagellomeres symmetrical and cylindrical. POL less than OOL. Wings present, macropterous or brachypterous. Posterior end of notauli always adjacent to transscutal articulation; Anteromedian projection of the metanoto—propodeo—metapecto—mesopectal complex present (not bifurcated) or absent. Male parossiculi independent or fused, and each parossiculus with gonostipes not fused. Sternaulus present or absent.

A key to the species of Conostigmus from China (males)

1. Facial sulcus present.................................................. Conostigmus abdominalis Boheman, 1832

- Facial sulcus absent................................................................................... 2

2. Ocelli forming an acute triangle with POL less than LOL; mesosoma 2−2.1 times longer than wide......................................................................................... Conostigmus ampullaceus Dessert, 1997

- Ocelli forming an obtuse triangle with POL more than LOL; mesosoma at most 1.5 times longer than wide.............. 3

3. Anteromedian projection of the metanoto—propodeo—metapecto—mesopectal complex absent; basal gastral carinae reaching 1/3 of syntergum length..................................................... Conostigmus villosus Dessert, 1997

- Anteromedian projection of the metanoto—propodeo—metapecto—mesopectal complex present; basal gastral carinae reaching 1/4 of syntergum length............................................................. Conostigmus xui sp. nov.