40 EBERIIAIirS OUTLINES OF 



THE IMPORTED ONION FLY. 

 (Anthomyia ceparutn. Bonche.) 



The eggs of this species are deposited on the bases of 

 the leaves during May and June. The larvae appear soon 

 and proceed to eat their way down to the base of the young 

 bulb. 



Fig. 41. Imported Onion Ply. 



In about fourteen days they pupate in the ground, and 

 a couple of weeks later the second brood of flies appear, 

 which generally lay their eggs on the bulb itself. 



Remedies. Same as for the black onion fly. 



The sickly onions are readily known by their turning 

 yellow. 



THE RADISH FLY. 

 (Anthomyia radicum. Bonche.) 



" Soon after the early radishes come up," says Dr. 

 Packard, " the roots are attacked by small white maggots, 

 and when the plants grow in old soil, the maggots are 

 especially destructive. The larvae appear in the spring as 

 soon as the radishes are partly grown." 



" When full-grown they change in the ground to reddish- 

 brown pupae, similar to those of the onion and cabbage mag- 

 gots. The insect remains in this state two or three weeks, when 

 the fly hatches and crawls up out of the ground, with its 



