390 



CLOVER SEED MIDGE. 



Riley, Ann. Rept. Comm. Ag., 1878, pp. 250-252, m. 

 Riley, Ann. Rept. Comm. Ag., 1884, p. 411. 

 Comstock, Ann. Rept. Comm.l Ag., 879, pp. 193-197. 

 Saunders, Rept. Ont. En. Soc., 1881, p. 38, Dl. 



This is not only one of the most alarming of our clover pests, 

 but may be regarded as one of the most to be dreaded insects 

 now infesting the valuable crops of the United States. It not 

 only does very serious damage, but is spreading with great ra- 

 pidity. Prof. Lintner first discovered it in a limited area in 

 Eastern New York. Now 1885 it is known to exist in Vir- 

 ginia, Pennsylvania, New Jersey, Ontario, Michigan, and all 

 through New York. The fact that the insect may remain in the 

 seed, and thus be carried with it any distance, adds to the 



dangers threatened by 

 this comparatively 

 new pest. 



Fig. 144 a shows the 

 female midge, ovipos- 

 itor extended ; c, ovi- 

 positor more magni- 

 fied ; I), head more en- 

 larged ; d shows great- 

 er enlargement of 

 three joints of anten- 

 nas. 



Fig. 145 a shows maggot or 

 larva; b, head more magni- 

 fied. 



FIG. i4o. T. ne e ss s are va i> pale yei- 



low, and only .025 m m (.01 of an inch) long. 



The larva or maggot varies from white to dark orange or or- 

 ange-red. It is when full grown 2mm (1-12 inch) long. 



