V. A.  Kolyada and Mostovski, M. B., ?Revision of Proctotrupidae (Insecta: Hymenoptera) described by Ch. T. Brues from Baltic amber?, Zootaxa, pp. 29 -38, 2007.

J.  Liu, He, J., and Xu, Z., ?Two new species of Exallonyx Kieffer (Hymenoptera: Proctotrupidae) from China, with a key to the Chinese species?, Zootaxa, pp. 35-41, 2006.