INJURIOUS INSECTS OF 1903. 



91 



B. Attacking the Trunk, Branches and Tzvigs: 



The following insects, which attack apple, also attack pear : 



Round-Headed Apple-Tree Borer. 



Flat-Headed Apple-Tree Borer. 



Oyster Shell Bark-Louse. 



Scurfy Bark-Louse. 



Apple Twig Borer. 



San Jose Scale. 



Fruit Bark Beetle. 



Remedies: See remedies for the various species under Apple 

 Insects. 



Large, soft whitish larvae boring deeply into the -wood. 

 PIGEON TREMEX. 



a 



Fig. S2.—Treme.v columba, Linn., Imago original. 

 Remedies: Not common enough to call for attention. 



Perforations at the base of some buds ; twigs blighted and 

 leaves withered about mid-summer. 



PEAR BLIGHT BEETLE. 



Remedies: See^page 60. 



