MISCELLANEOUS GARDEN INSECTS 



429 



Injury from the milling of the maggots has been most serious 

 on seedling and newly set beds, though it may occur on cutting 

 beds, being apparent by the plants turning yellow and dying much 

 earlier than they naturally do. 



Pulling the old stalks and burning them in late summer seems 



FIG. 307. The asparagus miner (Agromyza simplex Loew) : at left, side view 

 of fly; a, larva; 6, thoracic spiracles; c, anal spiracles; d, puparium from 

 side; e, same from above; /, section of asparagus stalk showing injury 

 and location of puparia on detached section a, e, much enlarged; /, 

 slightly reduced. (After Chittenden, U. S. Dept. Agr.) 



to be the best means for controlling the pest from our present 

 knowledge of it, which, however, is still rather meager. Dr. 

 Chittenden has suggested that letting a few stalks grow as a trap- 

 crop to which the flies might be lured, and then destroying these 

 stalks, might protect the cutting beds. 



