378 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



The Barred-winged Onion-maggot * 



The adult flies of this species may frequently be found upon 

 corn and are readily recognized by the banded wings. They are 

 similar in size to the last species, but the back is metallic blue- 

 green except the head, which is mostly hoary, with brownish- 

 black eyes. The maggots have been recorded as injurious to 

 corn and sugarcane and have been recently noted in Michigan 

 associated with the common onion-maggot, destroying onions, f 

 The maggots are similar to the onion-maggot but the posterior 

 end is more rounded and may be distinguished from the illus- 

 trations. The winter is passed in the puparium as far as observed. 



Remedies. In addition to the measures advocated for the last 

 species, the destruction of the affected onions and the thorough 

 plowing of affected land in the fall is of prime importance. Stored 

 onions which prove infested may be fumigated with carbon bisul- 

 fide to destroy the maggots and puparia and prevent the emerg- 

 ence of the adults. 



The Asparagus-beetle | 



This is a well-known pest of asparagus in Europe and was 

 first observed in Queens County, New York, in 1862, where it 

 threatened to destroy the asparagus, one of the most valued 

 crops of the Long Island truckers. Since then it has gradually 

 spread northward to southern New Hampshire, south to North 

 Carolina, and west to Illinois and Wisconsin, and has been found 

 at two points in California. There seems no reason why it should 

 not spread to wherever asparagus is grown, at least in the North- 

 ern States. 



The beetle is a handsome little creature about one-quarter 

 inch long, blue-black in color, with red thorax, and dark blue 

 wing-covers, marked with lemon-yellow and with reddish bor- 

 ders. The markings of the wing-covers are quite variable, the 

 light color sometimes forming submarginal spots, while in other 

 specimens it becomes so diffused as to form the principal color 

 of the wing-covers. 



* Chcetopsis aenea Wied. Family Anthomyidce. 



t See Pettit, Bulletin 200, Mich. Agr. Exp. Sta., p. 206. 



j Crioceris asparagi Linn. Family Chrysomelidce. See F. H. Chittenden, 

 Yearbook, U. S. Dept. Agr., 1896, p. 341; Bulletin 66, Bureau of Ent., pp. 

 6, 93, and Farmers' Bulletin 837. 



