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



Plate XX. 



Damage to Squashes by Larwe of Melon Fly. 



As pumpkins and squashes become well grown they are not subject to as great infestation as when they 

 are newly set. The female flies persist in ovipositing in any abrasions in the rind and in older punc- 

 tures. The larvae hatching are not able to penetrate the'pulp to any great extent, but develop in 

 small ulcerlike spots in the outer portion of the fruit, from which they push the developing decay, 

 as shown in figure 1. While this infestation does not cause complete destruction, it seriously affects 

 the symmetrical development about the affected areas. Figure 2 represents a squash slightly affected, 

 while figure 3 represents one very badlv affected although still fit for consumption. (Original.) 



