Tsalev, M. 1972 Entomophages of the Coccoidea scale insects (Homoptera, Coccoidea) in Bulgaria.. Studies on the Biological Control of Plant Pests 1: 79-93.

Notes: 79 entomophages reported, 64 are parasites and 15 are predators on 48 scale species; most from Coccidae but also Diaspididae, Pseudococcidae, Eriococcidae, Kermococcidae and Asterolecaniidae.