Trieces Townes, 1946

This genus is clearly monophyletic, possess a uniquely flattened mesopleuron, without an impressed mesopleural suture separating the mesepisternum from a narrow mesepimeron, with lateral longitudinal carinae extending its entire length of TII and at least on the anterior 0.3 of TIII, upper edge of pronotum without or with an inconspicuous submarginal groove. Trieces species are parasitoids of a wide variety of smaller Lepidoptera (Gauld et al., 2002).