7 
"Habits of Related Species 
_ Economic History .. . 
2 _ Description . esse 
= Seasenal History ss 
| Life History .... 
_ Sexual Development — 
s 
s 
3B 
Distribution . ..... 
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e e e e e ® e ° e 
eC eee WLS Pay ee pear pe HR | 
By 
~ L.P. ROCKWOOD, Associate Entomologist 
Cereal and Forage Insect Investigations 
Bureau of Entomology 
Page 
A ESS | 
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CONTENTS 
Number of Generations 
Rate of Reproduction . 
THE CLOVER ROOT BORER 
Ecobsy: oS Ss 5s OO. Sas a 
Damage . .. > 
Natural Enemies . . . 
Caticel. 22S Ste 
Summary ..... > 
Literature Cited ... 
‘WASHINGTON 
GOVERNMENT PRINTING OFFICE € 
1926 
* e . e ° . ° e 
e ° ° ° . ° e . 
NITED STATES DEPARTMENT OF AGRICULTURE 
e * ° ° ° 
August, 1926 
