182 Wisconsin Academy of Sciences, Arts, and Letters, 
Abies iiobilis. 
Chermes piceae houveri Cholodkovsky. 
Dreyfusia nusslini Borner, 
Abies nordmaimiana. 
Dreyfusia nusslini Borner. 
Mindarus ahietinus Koch. 
Abies pectinata. 
Chermes coccineus Ratzeburg. 
Chermes pectinatae Cholodkovsky. 
Chermes piceae Ratzeburg. 
Chermes stroMlohius Kaltenbach. 
Dreyfusia nusslini Borner. 
Eulachnus macchiatii Del Guercio. 
Lachnus pichtae Mordwilko. 
Mindarus ahietinus Koch. 
Abis sibirica. 
Chermes pectinatae Cholodkovsky. 
Chermes pini Koch. 
Lachnus ahieticola Cholodkovsky. 
Lachnus ahietis Pitch. 
Abies veitchii. 
Prociphilus humeliae Schrank. 
Abies webbiana. 
Chermes ahietis-piceae Stebbing. 
Chermes himalayensis Stebbing. 
Acaena splendens. 
Myzus michaelseni Schouteden. 
Rhopalosiphum acaenae Schouteden, 
Acalypha virglnica. 
Aphis gossypii Glover. 
Acanthaceae. 
Aphis nerii Kaltenbach. 
Acer sp. 
Aphis- villosus Hartlg. 
