366 NEW YORK STATE MUSEUM 



Marbled sawyer 



Monohammus luariuoratns Rand. 



This insect is much rarer in New York State than the larger M. c o n f u s o r Kirby 



and the nearly equal sized Al. s c u t e 1 1 a t u s Say. The beetle is about yk inch long and 



may be recognized by its light grayish wing covers mottled with brown and dark brown 



SDOtS. 



The insect was taken in small numbers the latter part of June and in 

 earl)' July, igoi at Albany and a few specimens have been received by the 

 writer from Pike. 



It presumably has about the same habits as M. scutellatus Say. 

 It was brought to the attention of Dr Fitch in 1857, who records the breed- 

 ing of the beetle in July. Dr Packard states that it is not a particularly 



common insect. 



Bibliography 



1857 Fitch, Asa. Ins. N. Y. 4th Rep't, p. 24 



Ribbed pine borer 



Rliagiimi lincatiim Oliv. 

 A white, broad headed flattened grub frequently occurs in consideralile numbers 

 under the bark of dead pines, and transforms to a gray, black marked beetle with con- 

 spicuous ridges on its wing covers. 



This species has been met with by the writer in considerable abundance 

 under the bark of dead white or hard pines in the vicinity of Albany. It 

 can not be considered injurious to living trees so far as our experience goes, 

 since it is one of the forms which revels in partly rotten tissues, and the 

 operations of the grub and associated insects soon loosen the bark so that 

 it falls off in large sheets. This beetle was so abundant Sep. 2, 1901, under 

 the bark of a good sized white pine, at Lansingburg, that about 25 adults, 

 numerous pupae and larvae were obtained in a few minutes. Oct. 10 practi- 

 cally the same conditions obtained, though there may have been fewer 

 larvae. It was taken Aug. 17, 1901, under spruce bark at Saranac Inn. 



This species was noticed by Dr Rathvon in 1861, who found it very 

 common in Pennsylvania and credited it with killing trees. It has been 



