Matthews, R. W., and J. M. González. “The acasta Conundrum: Polymorphism and Taxonomic Confusion Within the Parasitoid genus Melittobia (Hymenoptera: Eulophidae)”. Zootaxa, vol. 1854, no. 1, Aug. 2008, pp. 45–54, doi:10.11646/zootaxa.1854.1.4.