Pham, N. T., G. R. Broad, R. Matsumoto, and C. V. Achterberg. “First Records of the Genus Spilopteron Townes (Hymenoptera: Ichneumonidae: Acaenitinae) from Vietnam, With Descriptions of Five New Species”. Zootaxa, vol. 4590, no. 1, Apr. 2019, pp. 153–165, doi:10.11646/zootaxa.4590.1.6.