Williams, D.J. 1985f A new species of Ferrisia (Hemiptera: Pseudococcidae) on cassava (Manihot esculenta) from Paraguay and on ragweed (Ambrosia tanuifolia) from Argentina.. Bulletin of Entomological Research 75: 255-257.
Notes: F. meridionalis.
Williams, D.J. 1985f A new species of Ferrisia (Hemiptera: Pseudococcidae) on cassava (Manihot esculenta) from Paraguay and on ragweed (Ambrosia tanuifolia) from Argentina.. Bulletin of Entomological Research 75: 255-257.
Notes: F. meridionalis.