Pots) Se Oi heel HE 
ROCKY MOUNTAIN 
REGION 
Including primarily Colorado and Utah, but 
also a bordering area composed of southern 
Wyoming, southeastern Idaho and northern New 
Mexico. 
The aphids of this region include most of the 
economic species known to occur in the United 
States or even in North America. 
By 
MIRIAM A. PALMER 
Department of Entomology, 
Agricultural Experiment Station, 
Colorado Agricultural and Mechanical College. 
THE THOMAS SAY FOUNDATION 
VOLUME V 
Ee 
