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INSECT MISCELLANIES. 



Aphis Quercus. a> real size, showing the sucker bent under it like a tail; 

 b, magnified ; c, sucker magnified. 



With so efficient an instrument for wounding plants, 

 we need not wonder that a race so countlessly nume- 

 rous as the aphides effect most destructive ravages 

 in the vegetable kingdom. The serious ravages 

 of the dolphin, or collier (Aphis Fabae), on the bean 

 crop, and of the hop-fly (A. Humuli) in hop- 

 grounds, are but too well known. Of late years an- 

 other of these pests, called the American, or white, 

 blight (Aphis lanigera, ILLIGER; Eriosoma Mali, 

 LEACH),- has been extensively destructive to our 

 apple-trees. According to Mr. Knapp's information. 



