The genus Trissepyris Kieffer, 1905 (Chrysidoidea, Bethylidae) is revised. A new species from Afrotropical region (Ivory Coast) is described and illustrated: T. akan n. sp. It is differentiated from the only other species of this genus T. ruficeps Kieffer, 1905 by having the mandible with five apical teeth, the dorsal pronotal area with small punctures, the notaulus weakly widened posteriorly, the hind wing with five hamuli and the mesoscuto-scutellar fovea inclined anteriorly. An emended diagnosis and a thorough discussion about the morphological diagnostic characters are provided. Additionaly, a taxonomic key to the two species is presented.
Chrysidoidea, Epyrinae, Democratic Republic of the Congo, diagnosis, Ivory Coast, new species