Genus Trichacis Förster, 1856

Trichacis Förster, 1856: 108, 115. Type species Platygaster pisis Walker, 1835 by subsequent designation by Ashmead 1893: 294.

Diagnosis. Head smooth or finely sculptured with transverse striae above the toruli (Fig. 1E); female with three to five clavomeres (Fig. 2A) as opposed to six in Isocybus (Fig. 2C); OOL less than or equal to LOL (Fig. 1B, E); mesoscutellum with tuft of setae originating in a depression (Fig. 1A).