366 NEW YORK STATE MUSEUM 



Marbled sawyer 



J/onoImiiinius iiiariiioral us Rand. 



This iiisL-t t is inui h r^ircr in New Vurk State than the larger M. c o n f u sor Kirl)v 

 and tlie nearly ei|iial sized M. sen tellatus Say. The beetle is ahout "s in( h long and 

 may l>e rec ugni/ed liy its light grayish wing covers mottled with brown and dark brown 



SIKltS. 



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

 earl\- Jul\\ iqoi at Alliany and a tew specimens have been received by the 

 writer Irom Pike. 



It presumably has about the same habits as M. scu tellatus .Say. 



It was brouoht to the attention of I)r I'ilch in 1857, who records the breed- 



ino- of the beetle in July. I >r Packartl states that it is not a particularly 



common insect. 



Bibliography 



1857 Fitch, Asa. Ins. X. Y. 4lh Rep't, )i. 24 



Ribbed pine borer 



Rhiigtitiii liiicatiiui 01 iv. 



.V white, liroad headed flattened grub frei|uently occurs in considerable numbers 

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

 spicuous ridges on its wing c overs. 



This sijecies has been met with b\- tin- writer in considerable abimdance 

 luuU-r the bark of dead \vhit<; or hanl pines in the vicinity of Alban\'. It 

 can not be consideretl injurious to living' trees so far as our e.xperience goes, 

 since it is on(_'. of tin- forms which revels in partly rotten tissues, and the 

 operations of tin; grid) 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, 

 niuncrous |)Upa(^ and larvae were obtaineti in a few minutes. Oct. 10 practi- 

 call)' the same conditions obtainc-d, though there may have been fewer 

 larvae. It was taken Aug. 17, icjoi, tuid(.-r spruce l)ark at .Saranac Inn. 



This species was noticed by Dr Rathvon in i S61, who foimd it very 

 common in Penns\-lvania and credited it with killing trees. It has been 



