MAGGOTS ATTACKING THE ROOTS 121 
Fig. 90.— Adult of the Onion Maggot. 
Enlarged and natural size. Original. 
bulb. There are two to four gener- 
ations each year. 
Practical means of direct control 
are wanting. Onions should be 
planted each season in fields as far 
removed from the previous season’s 
planting as may be. In small plots 
earbolic acid emulsion may be used. 
Liberal amounts of tobacco dust 
along the rows will act as a fair 
deterrent. 
The Barred-winged Onion Maggot 
(Chetopsis enea Wied.) is a similar 
Fic. 91.— Work of the Seed-corn 
Maggot on the roots of beans. 
Original. 
species found on onions, and sometimes on the roots of corn and 
sugar cane. The life history and the remedies are similar. 
The Seed-corn Maggot (Pegomya fusciceps Zett.) 
This insect sometimes works on sprouting sweet corn, but is rather 
a pest of beans and peas. It is a white, soft-bodied maggot, without 
legs, and works beneath the surface of the ground, eating into and 
destroying newly planted peas or beans, especially just as the tender 
