42 FARMERS -BULLETIN 843. 



THE BELTED CHION.i 



The belted chion, in its larval state, attacks the pecan and hickories 

 as well as other trees, forming long galleries in the trunk or limbs of 



weakened or dead trees. The gal- 

 leries (fig. 49) are excavated to a 

 considerable depth in the beart- 

 wood, in which they run in the same 

 direction as the grain. The larva 

 is a yellowish white, round-headed 

 borer, with brown head and black 

 jaws. Upon attaining its full de- 

 velopment it changes to a pupa 

 within its gallery and the adult 

 beetle in emerging cuts a large 

 circular exit hole through the bark 

 (fig. 50). The beetles make their 

 appearance any time from March 

 to September, as has been deter- 

 mined from rearing records. 



The size of the beetles varies, the 

 length being from two-thirds to a 

 little more than an inch, and in 

 the males the antennae, or feelers, 

 are more than twice the length of 

 the body. The color is light brown, 

 usually with a snort, oblique, dull 

 band near the base of each wing 

 cover, but in some specimens the 

 b ands are absent. Each wing cover 

 bears two slender, conspicuous 

 spines at its tip, and on each side 

 of the thorax is a short, prominent 

 spine. (See figs. 51 and 52.) 



Y, ; 



CONTROL MEASURES. 



About all that is necessary to 

 FIG. 4o.-The bolted chion (cftfom dnetus): Larval prcven t iniurv to the pecan orchard 



galleries on pecan limb. L , . . . 



from this pest is to remove dying 



trees or dead wood promptly and destroy the same by burning, as it 

 is well known that this species prefers to breed in such material. 



THE HICKORY TWIG-GIRDLER.2 



The hickory twig-girdler is more or less familiar to all pecan growers 

 and is an insect that is frequently the subject of inquiry. This spe- 



1 Chion cinctus Drury. 



2 Oncideres cingulatus Say. 



