442 NEW YORK STATE MUSEUM 



He also states that it is much rarer than T. bidentata Say, from which 

 it may be distinguished by the form of the maxillary palpi and the mark- 

 ings. He has seen specimens from Ohio, but has not learned of its 

 occurring beyond the Mississippi. Dr John Hamilton records it as not 

 common in southwestern Pennsylvania. 



Red-shouldered twig borer 



Sinoxylon basilare Say 



A small, cylindric, stout, black, red-shouldered beetle about Vs inch long, makes 

 short, curved galleries in the branches of a number of deciduous trees. 



This small borer is rather uncommon in New York State, though it 

 has been recorded as breeding in the twigs of a considerable variety of 

 trees such as hickory, persimmon, mulberry, apple, peach and grapevine. 

 Dr Hopkins states that it infests most other deciduous trees and that the 

 larvae bore in solid wood. 



Description. This small beetle is black or very dark brown with a 

 variable area on the shoulders reddish. The antennae are light rufous 

 with the terminal portion composed of three enlarged segments and a 

 smaller one. Head coarsely and irregularly punctured ; thorax strongly 

 rounded, tuberculate anteriorly. Wing covers rather coarsely punctured 

 and with several inconspicuous striae. Declivity straight and bordered 

 above with three conspicuous teeth. Length about r / 5 inch. 



This species is probably generally distributed in the northeastern 

 United States, since it has been recorded from New York, New Jersey, the 

 vicinity of Cincinnati O., and Minnesota. 



Lurid Dicerca 



Dicer ca obscura var. hirida Fabr. 



A flat-headed, yellowish white grub bores in the trunks and limbs of pignut hickory, 

 transforming to a flattened, hard-shelled, lurid, dull brassy colored beetle. 



This rather pretty borer was bred in considerable numbers from a 

 badly galled hickory branch taken at Ilion, May 17, 1902. 



Description. The beetle is a flattened, hard-shelled insect ranging 



