HICKORY BORERS. 



287 



5. The belted chion. 



Chion cinctus (Drury). 



Order Coleoptera; Family CerambyciDvE. 



This worm, like the preceding and with probably similar habits, forms 

 long galleries in the trunk in the direction of the fibers 

 of the wood, producing a more flattened long-horned 

 beetle from two-thirds to a little over an inch long, of 

 a hazel-brown color, with a short dull straw-yellow 

 band placed obliquely forward of the middle of each 

 wing cover, and with a small sharp spine on each side 

 of the prothorax, and two slender ones on the tips of 

 each wing-cover; the antennje of the males are more 

 than twice the length of the body. ( Harris.) ^"'^- " chi^^' ^'^*** 



6. The discoidal saperda. 



Saperda discoidea (Fabricius). 



Order Coleoptera; family Cerambycid^. 



Not only did Dr. Fitch report this beetle as boring in hickory, but 

 Drs. Le Oonte and Riley have also bred it from this tree. 



This grub is a similar but much smaller worm than the foregoing, 

 changing to a cylindrical long-horned beetle of a black or blackish- 

 brown color, clothed with ash-gray pubescence which is less dense 

 above and commonly forms three gray stripes upon the thorax, and a 

 band or crescent upon the middle of the wing-covers, its legs yellow or 

 reddish. Length .40 to .60 inch. (^Fitch.) 



7. The hickory borer. 

 Cyllene picta (Drury). 



Boring in the trunk of the hickory, a whitish worm, one-half an inch long, the 

 beetle appearing in June. (See Locust tree borer.) 



We have received this insect in all its stages from Mr. H. Gillman, of 

 Detroit, who several years ago found a few of them in a hickory log 

 March 10. From these living specimens 

 the following description was drawn up : 



Larva. — Body thick; mouth-parts black; head 

 redd sh behind the antennse. Prothoracic seg- 

 ment (first behind the head) large and broad, 

 being one-half as long as broad ; flat and broad 

 above, the upper surface being lower than that 

 of the succeeding segment ; the anterior edge 

 thickened, being slightly corneous ; a mesial 

 deeply impressed line, especially on the hinder 

 two-thirds, where it becomes a broad, deep, angular furrow, dividing the tergum into 

 two quadrant-shaped halves; the outer edge of the segment rises above the flattened 



Fig. 112. — Common hickory borer; male, 

 nat. size; a, larva; 6, pupa. — From 

 Packard. 



