Bui. 491, U. S. Dept. of Agricultur 



Plate VI. 



Squash Vines Aborted by Work of Larv/e of Melon Fly. 



Squash vines affected by the larvae of the melon fly. Sometimes, especially during wet weather, 

 the female fly deposits eggs in the older stems. The young larvae hatching do not seem to be 

 able to kill the vine outright as they do the more succulent and rapidly growing vines, but as 

 they mature they cause abnormal swellings to develop about them. As the vines throw out 

 rootlets little injury is caused to squashes by this method of attack. (Original.) 



