138 PESTS OF GARDEN AND FIELD CROPS 
green to the cabbages in the seed bed likely will serve to poison enough 
of the adult beetles to reduce injury by the grubs. 
The Asparagus Miner (Agromyza simpler 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 
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 (Lirus concarus 
Fic. 126.— Work a Sav) 
Tium of the A : 
Miner. Enlarged. 
inal 
The stems of rhubarb sometimes are 
scarred and punctured by a snout beetle, 
