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



Plate III. 



Damage to Watermelon Vine by Larv/e of Melon Fly. 



Succulent watermelon vine showing the blackened and decaying condition beyond the point of attack. 

 The eggs from which the larvae hatched were laid at the base of the fruit stalk shown in lower portion 

 of figure. Note that small as the young watermelon is it has already become infested, as indicated by 

 the blackened area. For condition existing within this vine, see Plate IV. (Original.) 



