Böhm, H. 1954 Auftreten von Quadraspidiotus schneideri n. sp. (Homopt. Diaspidoid.) in Österreich. [Occurrence of Quadraspidiotus schneideri n. sp. (Homopt. Diaspidoid.) in Austria].. Pflanzenschutzberichte. Wien 12 (pt 3-4): 55-57

Notes: This report discusses the incidence and spreading of this species in Austria. Hosts were found to be apple and pear trees. Three Chalcididae were observed as natural enemies, but the degree of parasitism is low. Predators are of more importance.