42 



FAEMEES BULLETIN 843. 



THE BELTED CHION.i 



Tlie bolted cliion, in its larval state, attacks the pecan and hickories 

 as-weU 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 heart- 

 wood, in which they run in the same 

 direction as the grain. The larva 

 is a ycUowish white, romid-headed 

 borer, ^^'ith bro\\ai head and black 

 jaws. Upon attaining its full de- 

 velopment it changes to a pupa 

 withm 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. 



Tlie size of the beetles varies, the 

 length being from two-thirds to a 

 Uttle more than an inch, and in 

 the males the antennae, or feelers, 

 are more than twice the length of 

 the body. Tlie color is light bro^^^l, 

 usually with a snort, oblique, dull 

 band near the base of each wing 

 cover, but in some specimens the 

 bands are absent. Each wing cover 

 boars two slender, conspicuous 

 spines at its tip, and on each side 

 of the thorax is a short, prominent 

 spine. (See figs. 51 and 52.) 



CONTROL MEASURES. 



Fig. 40.— Tho brltcdchion (CAion cinctvs): I.;i 

 galleries on pecan limb. 



About all that is necessary to 

 prevent injury to the pecan orchard 

 from this pest is to remove dying 

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

 is well kno^vn that this species prefers to breed in such material. 



THE HICKORY TW IG-GIRDLER; 



Tlie hickory twig-girdlor is more or less familiar to all pecan growers 

 and is an insect that is frequently the subject of inquiry. Tliis spo- 



1 Chioncinctiis Drury. 



2 Oncideres cingulatus Say. 



