Bonfanti, R. 1999 La cocciniglia di San Jose. [San Jose scale.]. Informatore Agrario 15(5): 24-26.

Notes: Notes are given on the injuriousness, biological cycle and control of the diaspidid Comstockaspis perniciosa [Diaspidiotus perniciosus], a pest of fruit trees and ornamental plants. A ministerial decree issued in April 1998 has made control of the pest obligatory in Italy.