INSECTS AFFECTING PARK AND WOODLAND TREES 



373 



Pityophthorus sp. 



A small species belonging to this genus was met with by the writer 

 Sep. 8, 1900 at Karner, working under the bark of a dead hard pine limb. 



Fig. 77 Work of Pityophthorus species in white pine (author's illustration) 



Recently transformed adults and a few pupae were observed in the galleries. 

 The twig was also bored by a longicorn larva. The adult galleries of this 

 insect are remarkable for their delicacy. They are well represented in 

 plate 63, figure 6. It will be seen that the general design has been much 

 marred by the work of the longicorn above mentioned, and the tortuous 

 larval galleries may be seen branching from the primary ones at irregular 

 and somewhat considerable distances. The larva as it attains maturity 

 appears to make a very irregular excavation which 

 sometimes doubles back on itself or is simply a very 

 broad excavation. 



Pityophthorus sp. 



This species was taken Sep. 8, 1900 at Karner 

 from dead limbs of pitch pine. Its breeding season Fi s- 78 m 

 was evidently nearly at end as a very few pupae and 

 some recently transformed adults were found. 



Description. This is a reddish brown or almost black, rather slender, 

 cylindric beetle measuring but little over yig inch in length. 



iddle tibiae : a= 

 Gnathotricus mater i- 

 ari u s ; b=V ityogenes 

 sp. a. ; i"=P ityogenes sp. b. 

 (original) 



