448 NEW YORK STATE MUSEUM 



Distribution. This species has been recorded from the Middle and 

 Southern States by Dr LeConte, and it is undoubtedly generally distributed, 

 since it has been listed from the vicinity of Buffalo N. Y., Cincinnati O., 

 southwestern Pennsylvania, New Jersey and the District of Columbia. 



Bibliography 



1897 Hubbard, H. G. U. S. Dep't Agric. Div. Ent. Bui. 7, n. s. p. 24 



Hickory twig borer 



Chramesus hicoriae Lec. 



A short, stout, black beetle about */i6 inch long, may be bred from hickory twigs. 



This common species was reared from hickory limbs infested with a 

 gnarly or knotty growth, the adults appearing June 11 and July 1, 1902. 



Description. A black or dark brown beetle, rather stout, about inch 

 long. Club of antennae large and longer than funicle. Eyes slightly 

 emarginate, coarsely granulate ; thorax sparsely clothed with short, yellow- 

 ish pubescence. Wing covers plainly striated and with a pubescence 

 similar to that of the thorax. The antenna is figured on plate 67, figure 9, 

 a portion of the proventriculus on plate 69, figure 6 and the tibia in 

 figure 103. 



The larva has been described by Dr Smith as curculionid in form, 

 pure white, about V16 inch in length, and with a brown, chitinous head, 

 usually retracted so as to show only the mandibles, which latter are very 

 stout, curved, with a broad, gougelike, cutting edge. 



Life history and habits. This insect is quite common in hickory twigs 

 from 3/ 5 to 1 inch in diameter, the burrows being mostly in the wood and 

 just scoring the bark. A single upright channel about 1 inch long is cut 

 by the parent beetle, and eggs are deposited at nearly regular intervals on 

 each side, the larvae working at right angles for a short distance and then 

 turning and boring nearly parallel with the wood fibers. Dr John 

 Hamilton states that he reared a few specimens of this beetle from 

 hickory limbs the first summer after cutting, and great numbers during 

 the second season. 



