1734 



Rkpokt of Farmers' Institutes 



Insects attacking tlio fruit: 



Insects attacking the foliage; 



The Codling Moth 

 The Lesser Apple Worm 

 The Green Fruit-Woiin 

 The Red Bugs 

 The Apple Maggot 

 The Blister Mi\e 

 The Apple Aphides 

 Various Caterpillars 



Insects that Attack ttie Trunks of Apple Trees 

 THE apple tree borer 



These insects are very destructive pests 

 and do much more damage than the aver- 

 age grower appreciates. The injuries are 

 largely caused bv the grubs or larvae 

 which work beneath the bark. If the 

 burrows or channels of the insects are 

 numerous the bark may be girdled, re- 

 sulting in the decline and death of the 

 trees. Recent investigations have shown 

 that insects play an important role as 

 disseminators of diseases. It is now be- 

 lieved that various wood-boring insects 

 are in part responsible for cankers and 

 other disorders of the trunks of fruit 

 trees. The wounds and holes in the bark 

 produced by these pests certainly make it 

 possilde for disease-producing organisms 

 to establish themselves in the tree. 



The adult round-headed borer is a 



Fig. 131. The Round- handsome beetle about three-quarters inch 

 IIeadkd Apple Tkee Borer ^ ti,i • i • ^ -, 



Jong, Jight brown m color, witli two longi- 

 tudinal stripes down the back. The adult of the associated species 

 is dtdl metallic brown in color and al)out one^half inch in length. 

 The life histories are quite similar. The eggs are deposited in 

 crevices or slits in the bark, and from these there develops the 

 pale grubs which may be observed working beneath the bark, and 

 are familiar to uKjst growers. 



