The
submedial anteroposterior
sulcus on the mesoscutellar axillar complex that is paired.
written by: Graham, M.V.R.d.V., 1987. A reclassification of the EuropeanTetrastichinae (Hymenoptera: Eulophidae), with a revision ofcertain genera. Bull. Brit. Mus. (Nat. Hist.) (Entomol. Ser.) 55, 1–392.