34 



THE TWIG WEEVILS. FAMILY CTJUCULIOlSriD^:. 

 :p^:r,t of case 32. 



176. Tlie Western Spruce Weevil (Pissodes sp.). 



Attacks and kills the terminal shoots of Sitka spruce, causing deformed trees. 

 Northwestern States. 



Exhibit: Adults, larva?, work. 



177. The White-Pine Weevil 1 Pissodes strobi Peck.) . 



Attacks and kills the terminal shoots of white pine, spruce, and deodar, causing 

 serious deformity to the tree; also breeds in the bark of the lower portions of the 

 trunk of pines and spruce, hastening the death of injured trees. Eastern States. 



Exhibit: Adults, work. Sections of young white pine showing nature of injury to 

 terminal shoots. (Large case.) 



ROUND-HEADED BORERS. FAMILY CERAMBYCLTXffi. 



PART OF CASE 32. 



178. The Oak Pruner {Elapludion viUosum Fab.). 



The larvae bore in twigs of living oak, hickory, etc., causing them to break and fall. 

 Exhibit: Adults, work. 



179. The Hickory Twig- Girdler | Oncideres dngztkUa Say). 



The adult girdles the twigs of oak, hickory, persimmon, and other trees, some- 

 times so extensively as to cause serious injury. 

 Exhibit: Adults, work, figure. 



INJURING THE INNER BAEK AND SAP^VOOD. 



THE BARK WEEVILS. FAMILY CURCULIONLTXffi. 



CASE 33. 



180. The Cypress Weevil (tttdocimvs Tnannerheimii Boh.). 



The adults feed on the bark of bald-cypress twigs, causing their death, and the 

 larvse mine the inner bark of injured and recently felled trees. Southern States. 

 Exhibit: Adult, larva, work. 



181. The Pales Weevil (Eylobius pales Hbst.). 



The larvae bore into the inner bark of stumps and roots of recently felled, dying, 

 and injured pine. Eastern States. 

 Exhibit: Adults. 



182. The Pitch-Eating Weevil (Paehylobius picworus Germ.). 

 Has habits similar to the pales weevil. Eastern States. 

 Exhibit: Adults. 



183. The Walnut Weevil (Oryptorhynchus parochtts Hbst.). 



The larva:- mine the inner bark and sapwood of weakened and recently dead 



walnut. 



Exhibit: Adults, work. 



184. The Fir Weevil (-Pissodes dubius Rand.). 



The larvae mine the inner bark of balsam fir, hastening the death of injured trees. 

 Northeastern States. 



Exhibit: Adults, larva?, work. 



