232 



AN ECONOMIC ENTOMOLOGY. 



crop only is obtained on the jiollenizers, the main crop will be 

 safe without protection. Insecticides have not j)roved markedly 

 useful in this case. 



Other species of this genus ha\'e proved more or less trouble- 

 some, notably A. quadri-gibbus, on apple, but none of these 



Fig. 239. 



Work of the strawberry-weevil.— a, shoot of strawberry-plant bearing punctured 

 buds, b : the egg at c ; larva at d; pupa at/,- at^ an open strawberry-flower showing 

 the holes eaten by the beetles. 



recjuire more attention here, and the ne.xt species in order is 

 Conotrachelus nemiphar, the redoubtable " plum-curculio." 

 Ne.xt to the "codling-moth," this is, perhaps, the most serious 

 of the orchard pests, and it ranks above it in the difficulty attend- 

 ing its control. The beetle itself is less than one-fourth of an 

 inch in length, chunky in appearance, brown, with black and 

 gray mottlings, and with four elevated excrescences on the wing- 

 covers. The beetle hibernates and appears in early spring, feed- 

 ing first upon the unopened buds and afterward upon the young 



