220 



PESTS OF GARDEN AND FIELD CROPS 



feasible to cut for hay early, 

 before the larvae have done much 

 damage or completed their 

 growth. The second crop will 

 then be free of attack. 



Where timothy is combined 

 with clover, the insect is con- 

 trolled by clipping back the 

 growth in May, thus retarding 

 the blooming of clover past the 

 danger point, since the heads 

 will not be at the blooming 

 unginai. period when the midges are 



flying. Here again the second blooming will be exempt. 



The Clover Seed Chalcid Fly (Bruchophagus funebris Row.) 



The larva or grub of this tiny insect lives in the ripening seeds of 

 clover or alfalfa. Its presence is seldom suspected, and the only evi- 

 dence may be the shortage of the seed and the large quantity of empty 

 hulls blown out with the chaff. 



Fig. 273.— The Clover Flower-midge. 

 Florets showing arrested development. 

 Original. 



Fig. 274. — The Clover Flower-midge. Section through floret, showing work 

 and larva. Enlarged and natural size. Original. 



