134 PESTS OF GARDEN AND FIELD CROPS 
Certain weeds, especially burdock and ragweed, are the native 
food plants. Control consists in cutting and promptly destroying 
such weeds in or near the crops or plants attacked. The only direct 
measures feasible are removal of infested stalks as soon as the presence 
Fig. 117.— Work of the Squash Borer. Original. 
The Squash Borer (Jfelittia satyriniformis Hbn.) 
Whitish, fleshy grubs, about an inch long when full grown, bore 
in the stems of squashes and sometimes pumpkins or melons, often 
Fic. 119.—Cocoon and 
empty pupal shell of the 
Squash Borer. Original. 
killing the part of the plant beyond them. ‘Yellowish excrement will 
be found beneath the stem at the points where they are at work. 
