338 Wisconsin Academy of Sciences, AHs, and Letters. 
Spergula arvensis. 
Rhopalosiphum persicae Sulzer. 
Sphaeralcea “pendleri”. 
Aphis medicaginis Koch. 
Spinacia aleracea. ^ 
Aphis drassicae Linnaeus. 
Aphis gossypii Glover. 
Aphis rumicis Linnaeus. 
Rhopalosiphum persicae Sulzer. 
Spiraea sp. 
Acyrthosiphon ignotum Mordwilko. 
Acyrthosiphon soldattovi Mordwilko. 
Spiraea chamardryfolia. 
Aphis rumicis Linnaeus. 
Spiraea pninifolia. 
Aphis spiraeae Schouteden. 
Aphis spireaella Schouteden. 
Spiraea salicifolia. 
Aphis spireaella Schouteden. 
Aphis spiraeae Oestlund. 
Aphis spiraephila Patch. 
Spiraea ulmaria. 
Aphis spiraeae Schouteden. 
Aphis spireaella Schouteden. 
Macrosiphum cholodkovskyi Mordwilko. 
Macrosiphum pisi Kaltenhach. 
Macrosiphum portiscinskyi Mordwilko. 
Macrosiphum scaMosae Schrank. 
Macrosiphum ulmariae Schrank. 
Spiraea vanhouttei. 
Aphis spiraeae Schouteden. 
Aphis spireaella Schouteden. 
Macrosiphum spiraecola Patch. 
“Spiraxis”. 
Macrosiphum circumflexa Buckton. 
Spirodela polyrrliiza=Lemna polyrrhiza. 
Siphocoryne nymphaeae Linnaeus. 
