Neuffer, G. 1966 Zur parasitenfauna von Quadraspidiotus perniciosus Comstock (Hom., Diaspidinae) unter Besonderer Berücksichtigung der Importierten Prospaltella perniciosi tower (Hym., Aphelinidae).. Entomophaga 11(4): 383-393.

Notes: Title in English: [On parasites of Quadraspidiotus perniciosus Comstock (Hom., Diaspidinae) with special consideration given to the importation of Prospaltella perniciosi Tower (Hym., Aphelinidae).] This report discusses attempts to naturalize P. perniciosi for control of Quadraspidiotus perniciosus in southwest Germany.