3/2 



NEW YORK STATE MUSEUM 



adds that it is wideh' distributed. A small bct-tlr, II ister parallel us 

 Say occurs in the burrows of this insect and ma\' iK)ssibl\- pre)- on it. The 

 presence of this borer, as well as that of some others, may fre(juentl)- l.>e 

 detected liy the small piles of white sawdust on the bark or at the base of 

 infested trees. 



Description. This beetle is a rather slender, c\-lindric, l.irownish Idaek 

 insect, about i j< inch lonu-, and with yellowish legs. The g'lobular antennal 

 club, the puncturing of the thorax, and the linear dotting of the wing covers 

 are well shown in figure 75. The structure ot the antennae is represented 

 on plate 67, figure 4, and that of the mieldle til)ia at figure y^:>. 



The burrows of this beetle extend into the wood vertically for a 

 short tlistance, in a spt.'cimen at hand less than 'j an inch. This main 

 gallery has several branches tliverging in a direction approximateh' jiar- 

 allel witli the lines of growth, each of which leads into a series of vertical 

 brood chambers. Tlie illustration is tyjjical of the complex system of 

 galleries. 



Bibliography 

 1858 Fitch, Asa. Ins. X. V. 4th Rrp't 1S57. p. 40-42 

 1S90 Packard, A. S. U. S. Ent. Cdin. 5th Rc])'t, p. 71S-20 

 1S97 Hubbard, H. G. U. S. Dep't Agric Div. I'.nt. llul. 7, n. s. ji. 30 

 1899 Hopkins, A. D. W, Va. Agric. K\p. Sta. llul. 56, p. 344, 346, 347, 434, 442 

 1903 Felt, E. P. I'Or. I'ish iV Ciame Coin. 7th Rcp't, ]i. 495-96 



Pityophthorus sp. 

 An insect belonging to this genus was met with liy the writer Aug. 

 22, 1900, at Axton, where it was working in small numbers under the 

 bark of a )Oung dying white pine. The central chamber of this species is 

 somewhat circular antl in the specimen figured has four primary galleries 

 with a short fifth. The [primary or ci:;^^ galleries run longitudinally or 

 obli(piel\- to the wood fibers and cut into the wood a considerable projjor- 

 lion of tlieir depth. The lar\al galleries are somewhat tortuous, expand 

 very gradually, and also cut the sa])wood for about i,' their depth, and 

 toward the extreinities a greater proportion lies in the wood [fig. 77]. 



