Traces to section 77 in Muesebeck's key (Proc. U.S.N.M., LVIII, 493, 1920) but differs from all species falling under that section as follows: at once distinguished from etiellae and cassianus by having the ovipositor sheaths as long as abdomen; differs from victoriae in having the wings clear hyaline and from monticola which it appears to resemble more closely, in being somewhat larger, with scutellum impunctate, propodeum without a trace of a median carina and the radius of fore-wing uniting with transverse cubitus in a rounded obtuse angle.