346 Wisconsin Academy of Sciences, Arts, and Letters. 
Brachycolus korotnewi Mordwilko. 
Brachycolus tritici Gillette. 
Colopha rossica Cholodkovsky. 
MacrosipJium cerealis Kaltenbach. 
Macrosiphum granarium Kirby. 
MacrosipJium trifolii Pergande. 
Myzocallis ulmifolii Monell. 
Rhopalosiphum persicae Sulzer. 
ScJiizoneura graminis Del Guercio. 
Schizoneura venusta Passerini. 
Siphocoryne splendens Theobald. 
Toxoptera graminum Rondanl. 
Tetraneura graminis Monell. 
Tychea eragrostidis Passerini. 
Tychea setariae Passerini. 
Tychea trivialis Passerini. 
Tropaeolum sp. 
Aphis rumicis Linnaeus. 
Tropaeolum majus. 
Rhopalosiphum persicae Sulzer. 
Tropaeo'limi tricolormn. 
Rhopalosiphum persicae Sulzer. 
Tsuga canadensis. 
Chermes funitectus Dreyfus. 
Chermes nordmannianae Eckstein. 
RhizoMus subterraneous Kaltenbach. 
Schizoneura obliqua Cholodkovsky. 
Tulipa sp. 
Aphis rumicis Linnaeus. 
Aphis tulipae Boyer. 
Macrosiphum circumflexa Buckton. 
Macrosiphum duffeldii Theobald. 
Rhopalosiphum tulipaella Theobald. 
Tulipa gesneriana. 
Macrosiphum tulipae Monell. 
Rhopalosiphum periscae Sulzer. 
Rhopalosiphum tulipae Thomas. 
Tunica prolifera. 
Rhopalosiphum persicae Sulzer. 
