166 HALF HOURS WITH INSECTS. [Packard. 



greenish black above, "with a brassy hue especially on the 



raised transverse spots. It may be seen from May until 



July sunning itself on the bark of the trees in the crevices 



of which it inserts its eggs. As in the common borer just 



described it gnaws its way into the heart of the tree, but it 



only lives over one summer. From the flattened form of its 



body it makes a broad, flat, and not a c^dindrical hole, like 



that of the common borer, the gallery a little over an inch 



in length leading upwards from where the young larva began 



to work. A very similar species, C. Harrisli, or Harris' 



apple borer, is sometimes very destructive to the apple, 



though the red maple seems to have been its original home. 



The same remedies should be applied in dealing with these 



borers as with the young of the striped beetle. 



The rvJdte-Uned Psenocerus. — Though this beetle in the 



larva state is more commonly found tunnelling the stems of 



currant bushes, and sometimes boring into arane 

 Fig. 131. _ ' o & I 



stems, yet it has been known to be injurious in 

 apple orchards. The beetle is a " lougicoru," witli 

 a very round, cylindrical body. It is dark red- 

 dish-brown, with a swelling at the base of the 

 wing-covers, an oblique yellowish white line on 

 the basal third, and a broad curved white line 

 on the outer third of the Aving-cover. Tlie arub 



Psenocerus. ^ ^ 



(Fig. 131, enlarged about three times) is nearly 

 half an inch in length, with a honey j^ellow head scarcely 

 half as wide as the bod}^, while the segments of the body 

 are rather convex, each having two rows of minute warts. 

 It devours the sap wood and inner portion of the bark and 

 also the pith of the branches, thus locally killing the termi- 

 nal twigs, and causing the bark to shrivel and peel oflf, 

 leaving a distinct "dead line." Each grub lives in a burrow 

 about an inch and a half long, and five such burrows occur 

 in a portion of the branch five inches long. The grubs lie- 

 come fully grown during the middle of August. Dr. Fitch 



6 



