COLKOPTERA. 89 



deep transverse furrows. The first segment is broad, and slopes 

 obliquely downwards to the head ; the second is very narrow ; on 

 the upper and under sides of each of the following segments, from 

 the third to the tenth inclusive, there is a transverse oval space, 

 rendered rough like a rasp by minute projections. These rasps 

 serve instead of legs, which are entirely wanting. The beetles 

 may be found on the trunks and branches of the various kinds of 

 poplars, in August and September; they fly by night, and some- 

 times enter the open windows of houses in the evening. 



The borers of the apple-tree have become notorious, throughout 

 the New England and Middle States, for their extensive ravages. 

 They are the larvae of a beetle called Saperda bivittata by Mr. 

 Say, the two-striped, or the brown and white striped Saperda ; 

 the upper side of its body being marked with two longitudinal 

 white stripes between three of a light brown color, while the face, 

 the antennas, the under-side of the body, and the legs, are white. 

 This beetle varies in length from a little more than one half to 

 three quarters of an inch. It comes forth from the trunks of the 

 trees, in its perfected state, early in June, making its escape in the 

 night, during which time only it uses its ample wings in going 

 from tree to tree in search of companions and food. In the day- 

 time it keeps at rest among the leaves of the plants which it de- 

 vours. The trees and shrubs principally attacked by this borer, 

 are the apple-tree, the quince, mountain ash, hawthorn and other 

 thorn bushes, the June-berry or shad-bush, and other kinds of 

 Amelanchier and Aronia. Our native thorns and Aronias are its 

 natural food ; for I have discovered the larvae in the stems of 

 these shrubs, and have repeatedly found the beetles upon them, 

 eating the leaves, in June and July. It is in these months that the 

 eggs are deposited, being laid upon the bark near the root, during 

 the night. The larvae hatched therefrom are fleshy whitish grubs, 

 nearly cylindrical, and tapering a little from the first ring to the 

 end of the body. The head is small, horny, and brown ; the 

 first ring is much larger than the others, the next two are very 

 short, and, with the first, are covered with punctures and very 

 minute hairs ; the following rings, to the tenth inclusive, are each 

 furnished, on the upper and under side, with two fleshy warts 

 situated close together, and destitute of the little rasp-like teeth, 

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