97 
THE FLAT-HEADED BORERS. FAMILY BUPRESTIDZ. 
CASH 39. 
229. The Bronze Birch Borer. 
Agrilus anxius Gory. 
The larvee mine the inner bark of living and injured birch, aspen, and cottonwood. 
Very destructive in the Northern States. 
Exutsit: Adults, work. 
230. The Two-Lined Chestnut Borer. 
Agrilus bilineatus Web. 
The slender larvee mine the inner bark of recently dead, injured, and healthy 
chestnut and oak. One of the principal causes for the wholesale destruction of 
chestnut in the Southern States. 
Exuisir: Adults, work. 
231. The Eastern Hemlock Bark-Borer. 
Melanophila fulvoguttata Harr. 
: Larvee mine the inner bark of recently dead and injured hemlock in the Eastern 
eae ae Adults, work. 
232. The Flat-Headed Apple-Tree Borer. 
Chrysobothris femorata Fab. 
The larvee mine the inner bark of recently dead and injured oak, chestnut, hickory, 
maple, and some other deciduous forest trees. Eastern States. 
Exutisit: Adults, larvee, pupse, work. 
CASE 440. 
233. The Flat-Headed Pine Bark-Borer. 
Chrysobothris dentipes Germ. 
Larvee mine the inner bark of recently dead and dying pine. 
Exuisir: Adults. 
234. The Flat-Headed Hickory Borer. 
Dicereca obscura Fab. 
Larvee bore into the trunk and limbs of hickory, maple, and some other deciduous 
trees. 
Exuipir: Adults. 
235. The Western Hemlock Bark-Borer. 
Melanophila drummondi Kirby. 
The larvee mine the inner bark of dead and healthy western hemlock and Douglas 
spruce, causing defects in the lumber and killing trees. Northwestern States. 
Exuisir: Adults, larva, pupa, work. 
INJURING THE WOOD. 
THE FLAT-HEADED BORERS. FAMILY BUPRESTIDZ. 
PART OF CASH <0. 
236. The Turpentine Borer. 
Buprestis apricans Hbst. 
The larvee bore into the solid resinous heartwood of longleaf pine after ‘‘boxing”’ 
by turpentine workers, so weakening the trunk as to cause it to break and spoiling 
portions of it for lumber. 
Exuipit: Adult, work. 
25916--No. 53 —05——-7 
