Pham, N. T., R. Matsumoto, K. Konishi, M.-L. Sheng, and G. R. Broad. “A Review of the Genus Apophysius Cushman (Ichneumonidae: Phygadeuontinae), With Descriptions of Six New Species”. Zootaxa, vol. 4802, no. 2, June 2020, pp. 301–316, doi:10.11646/zootaxa.4802.2.5.