INSECTS AFFECTING PARK AM) WOODLAND TREES 435 



with a stout ovipositor extendiii,i,f about \[(, incli beyond the tip of the wing 

 covers. The antennae are slender, ringed with grayish white, and about 

 one half longer than the bod\-. The head, thorax and body are obscurely 

 and somewhat irregular!)- niarkt'd with grayish brown and silvery while. 

 The thorax is Ijroader than long and armed lateralh' with a stout spine a 

 little behind the midtlle ; wing covers rounded at the base. Mr Wickham 

 separates this species from its ally, U. triangulifer liald., by its more 

 elongate form, grayish pubescence on the upper surface, excej)! for the dark 

 markings consisting of small closely placed spots and blotches ; these latter 

 form a distinct line on each side of the middU; of the prothorax, usually 

 also an antemedian and postmedian, irregular elytral band. 



The larva is a little over 'j inch in length, and has been described by 

 I)r I'"ilch as having a more or less retracted head, its base white and ante- 

 rior portion deep, lawny yellow, black along each side. The body of the 

 grub tapers slightly backwartls to the iiiiddlc, from whence it has nearl)- the 

 same diameter to the jjluntly rounded tip. There is a large, transverse, 

 tawny yellow spot on the upper side of the prothoracic segment, occupying 

 its basal half, and an elevated, rough, transverse, oval spot of the same 

 tawn\- yellow color on the middle of all the other body segments, except the 

 last two. 



Life history and habits. Dr Fitch stales that the bark of recentl\- felleil 

 black oaks, O u C! r c u s t i n c t o r i a, are mined b\' borers belonging to this 

 species, they forming large worm-eaten tracks. Transformation to the 

 pupa occurs in the cavity, and the long-horned beetles appear in June. In 

 I)r l-'itch's linn; the species was so abundant that unless the bark of the 

 black oak was [jeeled immediately after the tree fell, it became much worm 

 eaten and worthless for dye purposes. 



Food plants. This beetle appears it) have a somewhat varied lood 

 habit. Besides occurring in ])ine and oak, as stated above, it has been 

 reared by Mr Chittenden from chestnut, oak ami maple, and Mr Heuten- 

 muller also records it in addition from hickory, limbs of chestnut, and on 

 the authority of Mr JcuttT from a|)ple and pear. Mr Dury records taking 

 it on beech in the vicinity of Cincinnati. 



