83 



INJURY BY BARK AND WOOD BORING GRUBS. ORDER COLE- 

 OPTERA, FAMILIES BUPRESTID^, CERAMBYCIDiE, AND MEL- 

 ANDRYIDJE. 



94. Buprestid. 



Work of flat-headed bark and wood miner in wood of dying ))alsani fir. 

 Exhibit: Work. 



95. The Destructive Spruce-Wood Borer. 



Telropiuiii ciii)ia7)u>j)tenuii Kirljy. 



A slender, round-headed bark and wood boring grib which excavates winding 

 burrows through the inner bark and surface of the wood, then enters the sapwood and 

 changes to tiie a(hilt. Infests sHghtly injured, declining, and recently felled red, 

 black, and white spruce. Maine to West Virginia. Common, and very destructive 

 to the wood of dying trees, and may also cause the death of slightly injured ones. 



Exhibit: Adult and work. 



96. The Cedar Tree Borer. 

 Hylotrupes ligneus Fab. 



A slender, whitish, bark and wood boring grub, excavating winding ))urrows in 

 the bark and surface of the wood of living arborvitfc, causing the death of the trees 

 and serious defects in the wood of living ones. Common in northwestern Maine. 



Exhibit: Adult and work. 



97. The Blazed-Tree Borer. 



SerrvpaJjms hnrbatas Schall. 



A slender, whitish, wood-boring grub, which enters at wounds on living trees and 

 bores deep into the sapwood and heartwood, causing a rapid decay of the infested 

 parts. Common in "blazed " wounds on balsam tir and spruce trees along the trails 

 in northwestern Maine. 

 Exhibit: Work. 



98. The Mountain Ash Borer. 

 Saper(l<( sp. 



A destructive enemy of the mountain ash, boring in the healthy wood of the main 

 stem. Northwestern Maine. 

 Exhibit: Work. 



INSECT ENEMIES OF FORESTS IN GENERAL. 



INJURING THE FOLIACiE. 



CATERPILLARS OF BUTTERFLIES AND MOTHS. ORDER 

 LEPIDOPTERA. 



CA.SE as. 



99. The Violet-Tip Butterfly. 



Polygonia inter vucjationis Fab. 

 Larvpe on elm. 

 Exhibit: Adults, larva. 



100. The Mourning-Cloak Butterfly. 

 Euvanessa anliopd Linn. 



Larvpe on foliage of elm, willow, and poplar, sometimes defoliating trees. 

 Exhibit: Adults, larvpe and pupa. 



101. The Viceroy Butterfly. 

 Basilarchia archippus Cram. 



Larvfe on willow and poplar. 

 Exhibit: Adult. 



