Holman, J. 2002 Prirozeni nepratele stitenky zhoubne (Quadraspidiotus perniciosus Coms) z radu blanokridlych (Hymenoptera) v Ceske Republice. [The natural enemies of San José scale (Quadraspidiotus perniciosus Coms) from the order Hymenoptera in the Czech Republic].. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 50(3): 41-54.

Notes: Field surveys were conducted from 1998 to 2001 to identify the natural enemies of San Jose scale, Q. perniciosus [Diaspidiotus perniciosus], in the Czech Republic. Eight Hymenopteran species were identified as parasitoids of Q. perniciosus. Of these, Aphytis proclia and Prospaltella perniciosi [Encarsia perniciosi] accounted for 67.37 and 30.47% of the total number of Hymenopteran parasitoids, respectively, both of which have not been introduced to the Czech Republic. The other Hymenopteran parasitoids were Aphytis mytilaspidis, Parvulinus aurantii [Alaptus aurantii], Thysanus ater, Azotus celsus, Pteroptrix dimidiata and Physcus testaceus [Coccobius annulicornis]. In addition, 6 species from the family Encyrtidae were also identified. Aphytis proclia was found to be dominant in all other scales (Epidiaspis leperii, Q. pyri [D. pyri], Chionaspis salicis and Lepidosaphes ulmi), but few individuals of Aphytis mytilaspidis and some individuals of Encyrtidae were also noted.