Thiem, H. 1948 Betrachtungen zur Lage und Bekämpfung der San José-Schildlaus im südwestdeutschen Befallsgebiet. [Views of the occurrence and control of the San José scale insect in the southwest German area of infestation.]. Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz/Journal of Plant Diseases and Protection 55: 17-27.

Notes: Distribution, site of first occurrence in Germany, hosts, biology, life cycle, and chemical control are discussed. Other species mentioned include Aspidiotus britannicus, A. hederae, Chionaspis salicis, Epidiaspis betulae and Eulecanium corni.