138 



PESTS OF GARDEN AND FIELD CROPS 



green to the cabbages in the seed bed Ukely will serve to poison enough 

 of the adult beetles to reduce injury by the grubs. 



The Asparagus Miner {Agromyza simplex Loew) 

 Irregular mines are made just beneath the outer skin of asparagus 

 stems. Frequently the surface will become ruptured and turn back, 

 and beneath may be seen the tiny brown puparium, looking like a 



flaxseed. The larva which causes the 

 injury is a footless maggot one fifth of 

 an inch long, white, tapering to the head 

 end. The adult is a small fly, rather hump 

 backed, with a large head and prominent 

 eyes. 



Fig. 126. — Work and pupa- 

 rium of the Asparagus 

 Miner. Enlarged. Orig- 

 inal. 



Fig. 127. — Adult of the Asparagus Miner. 

 Enlarged and natural size. Original. 



Badly infested stalks should be cut off 

 or pulled up, and burned. Stalks that are 

 being cut regularly for market will not 

 show injury. A few plants may be left 

 at this time as traps, and these destroyed. 



The Rhubarb Curculio (Lixus concavus 



Say) 



The stems of rhubarb sometimes are 

 scarred and pmictured by a snout beetle. 



