Ferris, G.F. 1920a Notes on Coccidae-VI. (Hemiptera).. Canadian Entomologist 52: 61-65.
Notes: Redescribes Porococcus and P. tinctorius; comment on Cissococcus, Howardia, Anoplaspis; synonymy of 4 coccids.
Ferris, G.F. 1920a Notes on Coccidae-VI. (Hemiptera).. Canadian Entomologist 52: 61-65.
Notes: Redescribes Porococcus and P. tinctorius; comment on Cissococcus, Howardia, Anoplaspis; synonymy of 4 coccids.