40 



245. The Chestnut Timber Worm (Lymexylon sericeum Harr. ). 



The larvae excavate extensive galleries in the heartwood and sapwood of living and 

 dead chestnut and oak. 

 Exhibit: Adult, work. 



THE CARPENTER WORMS. ORDER LEPIDOPTERA. FAMILY 



cossnxa:. 



CASE 4,3. 



246. The Leopard Moth (Zeuzera pyrina Fab.). 



An introduced species very injurious to forest, shade, and orchard trees in the 

 vicinity of New York City. 

 Exhibit: Adults, larvae, pupa, work. 



247. The Oak Carpenter Worm (Prionoxystus robinix Peck). 



The larvae mine in living oak and locust and are sometimes very destructive, espe- 

 cially to aged trees. 

 Exhibit: Adults, work. 



248. The Poplar Carpenter Worm (Cossus centerensis Lint.). 

 The larvae mine in trunks of poplar. 



Exhibit: Adults. 



THE HORNTAILS OR WOOD WASPS. FAMILY UROCERIDiE. 



CASE 43. 



249. The Pigeon Tremex ( Tremex columba Linn. ). 



Larvae mine the sapwood of hickory, oak, poplar, maple, and other deciduous forest 

 trees, hastening the death of those weakened by other causes. 

 Exhibit: Adults, work. 



250. The Pale Tremex {Tremex sericeus Say). 

 Habits like the pigeon tremex. 



Exhibit: Adults. 



251. The White-Horned Horntail ( Urocerus albicornis Fabr.). 

 Attacks spruce, hemlock, and fir. 



Exhibit: Adults, larva, pupa, work. 



252. The Blue Horntail (Paururus cyaneus Fab.). 

 Attacks spruce and fir. 



Exhibit: Adult. 



253. The Banded Horntail (Urocerus abdominalis Harris). 

 Attacks spruce. 



Exhibit: Adults. 



254. The Yellow- Winged Horntail (Urocerus fiavipenms Kirby). 

 Attacks spruce. 



Exhibit: Adults. 



255. The Small-Pine Horntail (Paururus pinicola Ashm.). 

 Larvae in pine. 



Exhibit: Adults. 



256. The Black-Pine Horntail (Paururus hopkinsi Ashm.). 

 Larvae in pine. 



Exhibit: Adults. 



