Hansson, C., and K. Nishida. “A New Species of Emersonella (Hymenoptera: Eulophidae), Parasitoid on Weevil Eggs (Coleoptera: Curculionidae), from Costa Rica”. Zootaxa, vol. 607, no. 1, Aug. 2004, pp. 1–6, doi:10.11646/zootaxa.607.1.1.