Couplet 8.
radial cell more or less open at apex; petiole at most approaching twice as long as apically wide
future couplets
Side of scutellum with a free, hook... ...
Oxylabis
Side of scutellum without a free pr... ...
Belyta Jurine
radial cell completely closed at apex; petiole fully 3 times as long as apically wide. (Very narrow but species; postscutellum with a prominent spinose projection)