Cockerell, T.D.A. 1912 Some Coccidae from the Grand Canyon, Arizona.. Canadian Entomologist 44: 301.
Notes: Phenacoccus betheli n. sp.; notes on 2 others.
Cockerell, T.D.A. 1912 Some Coccidae from the Grand Canyon, Arizona.. Canadian Entomologist 44: 301.
Notes: Phenacoccus betheli n. sp.; notes on 2 others.