83 
INJURY BY BARK AND WOOD BORING-GRUBS. ORDER COLE- 
OPTERA, FAMILIES BUPRESTIDA, CERAMBYCIDA, AND MEL- 
ANDRYIDZ. 
CASH 2k. 
94. Buprestid. 
Work of flat-headed bark and wood miner in wood of dying balsam fir. 
Exarsit: Work. 
95. The Destructive Spruce-Wood Borer. 
Tetropium cinnamopterum Kirby. 
A slender, round-headed bark and wood boring grub which excavates winding 
burrows through the inner bark and surface of the wood, then enters the sapwood and 
changes to the adult. Infests slightly 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. 
Exuisit: Adult and work. 
96. The Cedar Tree Borer. 
HHylotrupes ligneus Fab. 
A slender, whitish, bark and wood boring grub, excavating winding burrows in 
the bark and surface of the wood of living arborvitee, causing the death of the trees 
and sericus defects in the wood of living ones. Common in northwestern Maine. 
Exarsit: Adult and work. 
97. The Blazed-Tree Borer. 
Serropalpus barbatus 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 fir and spruce trees along the trails 
in northwestern Maine. 
Exuisit: Work. 
98. The Mountain Ash Borer. 
Saperda sp. 
A destructive enemy of the mountain ash, boring in the healthy wood of the main 
stem. Northwestern Maine. 
Exurisit: Work. 
INSECT ENEMIES OF FORESTS IN GENERAL. 
INJURING THE FOLIAGE. 
CATERPILLARS OF BUTTERFLIES AND MOTHS. ORDER 
LEPIDOPTERA. 
CASE 25. 
99. The Violet-Tip Butterfly. 
Polygonia interrogationis Fab. 
Larvee on elm. 
Exaisit: Adults, larva. 
100. The Mourning-Cloak Butterfly. 
Euvanessa antiopa Linn. 
Larvee on foliage of elm, willow, and poplar, sometimes defoliating trees. 
Exuatisir: Adults, larve and pupa. 
101. The Viceroy Butterfly. 
Basilarchia archippus Cram. 
Larvee on willow and popiar. 
Exnipit: Adult. 
