12 MISC. PUBLICATION 74, U. S. DEPT. OF AGRICULTURE 



THE BLACK-HORNED PINE BOREB 



Callidium antennatum Newm. 



The black-horned pine borer attacks a variety of softwoods and. 

 together with other closely allied species, is widely distributed over 

 the United States. Considerable damage is caused to rustic houses 

 and other structures where these woods with the bark still on are 

 used for support or ornamentation. The presence of bark is neces- 

 sary for attack by this species (18, 68). 



THE BELTED CHION 



Chion dnctus Drury 



The belted chion, a long-horned borer, attacks several species of 

 partly seasoned hardwoods, causing severe damage to the sapwood of 

 oak and hickory, often making holes from one-half to three-fourths 

 of an inch wide and 2 feet long and rendering it unfit for construction 

 purposes. This insect will attack wood even after the bark has been 

 removed from the log. Small stock used in the manufacture of rustic 

 furniture or in making small products, such as mallets and mauls, is 

 subject to severe damage by this insect (18, 62, 68). 



THE PAINTED HICKORY BORER 



Cyllene caryae Gahan 



The painted hickory borer causes serious injury to green saw 

 logs. The larvae make large oval holes in the sapwood. This part 

 of the log, which should furnish the best grades of material, is often 

 ruined by the resulting defects in the lumber. Besides hickory 

 this borer attacks walnut, honeylocust, mulberry, and osage orange 

 (18,22). 



THE WESTERN CEDAR BARK BORER 



(Hylotrupes) Herri callidium amethystinum Lee. 



The western cedar bark borer is of considerable economic im- 

 portance in the Pacific coast region of the United States. It injures 

 wood of recently felled giant arborvitae and incense cedar (18, 68). 



THE OLD HOUSE BORER 



Hylotrupes bajulus L. 



The old-house borer attacks a variety of dry, seasoned, soft- 

 wood products. This species, introduced from Europe, is of con- 

 siderable economic importance and is becoming more abundant and 

 serious each year. It confines its activities to such materials as 

 joists, studding, and rafters (18, 62). 



THE CEDAR-TREE BORER 



Hylotrupes Ugneus Fab. 



The cedar-tree borer attacks a variety of softwoods (firs, spruces, 

 hemlocks, cedars, arborvitae, etc.), damaging the wood for com- 

 mercial purposes and causing shedding of the bark of material used 

 in rustic work. The larvae mine first between the bark and wood 

 and later in the sapwood, occasionally going into the heart tvood 

 (18,68). 



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