178 



INSECT MISCELLANIES. 



Aj)his Quercus. a, real size, showing the sucker bent under it like a tail ; 

 b, magnified j 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 (JlpJiis Fabcz), on the bean 

 crop, and of the hop-fly {Ji. Himiuli) in hop- 

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

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

 blight {Jlphis lanigera, Illiger ] Eriosoma Mali, 

 Leach), has been extensively destructive to our 

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



