1. A synopsis of the American Bethylidae (Hymenoptera, Aculeata);EVANS H.E;Bull. Mus. Comp. Zool,1964
2. New generic records of Bethylidae from South American;EVANS H.E;Proc. Entomol. Soc. Wash,1967
3. The genus Pseudisobrachium in Argentina and Chile;EVANS H.E;Acta Zool. Lilloana,1969
4. The genera Apenesia and Dissomphalus in Argentina and Chile (Hymeneoptera, Bethylidae);EVANS H.E;Breviora,1969
5. Further studies on South American Bethylidae (Hymenoptera);EVANS H.E;Proc. Entomol. Soc. Wash,1973