42 



APPLE MAGGOT PLUM WEKVIL. 



A second brood often comes out in the early autumn, which 

 attacks the winter fruit. 



THE APPLE MAGGOT (Tripeta pomonella). This insect has so 

 increased within the past few years as to threaten the total 

 destruction of the "Apple crop in some sections. The perfect 

 insect is a small fly, (Fig. 41, 6), resembling, the common house 

 fly, but is much smaller. As the Apple approaches maturity, the 

 fly lays its eggs in the fruit by puncturing the skin. The larva, 

 or maggot, (Fig. 41, ), of which there .are often several in one apple, 

 make burrows in all directions, rendering the fruit worthless. 



Remedy. No remedy but the destruction of the infected crop 

 by feeding to swine or cattle has been discovered as yet. This 

 will be effectual if all the fruit is destroyed as it falls from the 

 tree. 



THE PLUM WEEVIL, OR CURCULIO (Canotrachelus nenuphar). 

 Fig. 42 a, the perfect insect, much enlarged; Z>, natural size, at 



work upon the plum; c, larva?; d, injured fruit. Until recently, 

 it was generally supposed that all the worms found in the Apple 

 were the larvje of the codlin moth. My attention was attracted 

 two years ago to the large number of Apples falling from the 

 trees early in the summer. Upon examination it was found that 

 nearly every one bore the crescent-shaped mark of this insect, and 

 most of them contained the worms of the plum weevil. In the 

 examination of nearly one thousand fallen Apples, only eight or 

 ten contained worms that did not bear the marks of this insect. 



Remedy. The only effectual remedy for this injury to the 

 Apple is the same as for the codlin moth and Apple maggot. 



LABELS FOR FRUIT TREES. Apple trees and all fruits should 

 be carefully labelled, that the owner may not forget the names of 

 the kinds, and also that any subsequent possessor may know with- 

 out doubt what varieties he is growing. Most of the confusion in 



