M.  Fischer, ?Die Opiinae der nearktischen Region (Hymenoptera, Braconidae). I. Teil.?, Polskie Pismo Entomologiczne, vol. 34, pp. 197-530, 1964.

M.  Fischer, ?Revision der neotropischen Opiinae (Hymenoptera, Braconinae).?, Reichenbachia, vol. 3, pp. 1-67, 1964.

C.  Watanabe, ?On the identity of Spathius helle Nixon, a larval parasite of the rice stem borer, Chilo suppressalis (Walker) (Hymenoptera, Braconidae).?, Mushi, vol. 38(6), pp. 33-35, 1964.

V. I.  Tobias, ?Novye viy i rod brakonid (Hymenoptera, Braconidae) iz Tadzhikistana.?, Izvestiya Akademii Nauk Tadzhikskoi ssR (Biol.), vol. 2(16), pp. 58-65, 1964.

V. I.  Tobias, ?[New species and genus of Braconids (Hymenoptera, Braconidae) from Kazakhstan.]?, Trudy Zoologicheskogo Instituta. Leningrad, vol. 34, pp. 177-234, 1964.

C. F. W.  Muesebeck, ?Identity of the genus Miocolus Foerster (Hymenoptera: Braconidae).?, Proceedings of the Entomological Society of Washington, vol. 66(2), p. 88, 1964.