860 NEW YORK STATE MUSEIM 



213 Locust borer, Cyllene robiniae Forst. A serious 

 enemy of locusttrees. 



Chief accessible article: Hopkins, A. D. W. Va. agric. exp. sta. 

 Bui. 16. '91. p. 88. 



214 Ribbed Bhagium, Rhagium lineatum Oliv. Works 

 under dead or dying pine bark, 



215 White pine weevil, Pissodes strobi Peck. Injures 

 terminal shoots of pine. 



216 Willow snout beetle, Cryptorhynchus lapathi 

 Linn. An introduced borer which injures poplar and willow. 



Bark and wood borers, S c o 1 y t i d s 



General works on the group 

 Hopkins, A. D. Catalogue of West Virginia Scolytidae and their 

 enemies. W. Va. agric. exp. sta. Bui. 31. '93. p. 121-68. 

 Hubbard, H. G. V. S. dep't agric. div. eut. Bui. 7, u. s. '97. p. 9-30. 



217 M o n a r t h r u m mali Fitch. Attacks beech, apple. 

 Chief accessible article: Fitch, Asa. Noxious and beneficial 



insects of New York. 3d rep't, '56. p. 8-9. 



218 Gnathotrichus materiarius Fitch. Attacks 

 white and pitch pine. 



219 P i t y o g e n e s sp. Attacks white pine. 



220 Pitj^ophthorus minutissimus Zimm. A bark- 

 miner of red oak. 



221 P i t y o p h t h o r u s sp. Working in dead limbs of black 

 birch. 



222 Xyloterus politus Say. Attacks beech and soft 

 maple. 



. 223 X. b i V i 1 1 a t u s Kirby. Attacks balsam stumps. 



224 Cryphalus striatus Mann. Attacks balsam, 

 spruce and hemlock. 



225 D r y o c o e t e s e i c h h o f f i Hopk. Taken under bark 

 of yellow birch stump. 



226 Dryocoetes sp. Working in bark of spruce logs. 



227 Xylocleptes sp. Boring in partly decayed twigs of 

 sugar maple. 



228 T o 111 i c u s c a 1 1 i g r a p h u s Germ. Abundant in 

 thicker bark of dying white and pitch pines. 



