Cooley, R.A. 1897 New species of Chionaspis.. Canadian Entomologist 29: 278-282.
Notes: C. cockerelli, C. aucubae, C. wistariae, C. pinifoliae heterophyllae, and Cockerell description of C. latissima Ckll.
Cooley, R.A. 1897 New species of Chionaspis.. Canadian Entomologist 29: 278-282.
Notes: C. cockerelli, C. aucubae, C. wistariae, C. pinifoliae heterophyllae, and Cockerell description of C. latissima Ckll.