Jefferson, D.K., Schultz, P.B., & Bryan, M.D. 1995 Distribution of natural enemies of Euonymus scale, Unaspis euonymi (Comstock), in Virginia.. Journal of Entomological Science 30(2): 273-278.

Notes: Abstract: Colonization of Chilocorus kuwanae and Cybocephalus nipponicus, introduced predators of Unaspis euonymus, was evaluated on Euonymus japonica by regional and statewide surveying; this study determined the statewide distribution of the native parasites of euonymus scale, Aspidiotiphagus spp. and Encarsia spp.