Stature of Bothynostethus distinctus Fox, Black, closely, opaquely punctate. Ocelli arranged alomost in an equilateral triangle. Eyes slightly convergent above, with a median emargination within, but not deply emarginated, as in Pison. Clypeus with a median triangular production Mandibles beneath strongly emarginate at basal third and rufous from the emargination to apex. Methorax rugulose, with a median furrow and a delicate carina, the furrow lineated on either side from the carina. Wings subhyaline, the tegulae, stigma and veins brown-black; the submedian cell is distinctly shorter than the median; the first recurrent nervure is interstitial with the first transverse cubitus, while the second recurrent joins the submarginal cell at its apical fourth. Abdomen distinctly punctate, the dorsal segments 1-4 broadly depressed at apex and clothed with a silvery or at least glittery pubescense, especially noticeable laterally; ventral segments 2-5 narrowly testaceous at apex and finely closely punctate. Longer spur of hind tibiae nearly as long as the basal joint of tarsi.
Ashmead, William H., "Four New Entomophilous Wasps" (1899). An. Paper 69.