Forbes, S.A. 1898 The San Jose scale in Illinois. (Aspidiotus perniciosus Comstock.).. Annual Report of the Illinois State Entomologist 20: 1-25.
Notes: General review, including life history and descriptive information.
Forbes, S.A. 1898 The San Jose scale in Illinois. (Aspidiotus perniciosus Comstock.).. Annual Report of the Illinois State Entomologist 20: 1-25.
Notes: General review, including life history and descriptive information.