10 
Bulletin 71. 
ATTACKING TRUNK AND BRANCHES. 
BORERS, FLAT-HEADED. 
(Chrysobothris femorata.) 
A whitish grub boring be¬ 
neath the bark of apple and other 
trees and peculiar in appearance 
in seeming to have a greatly en¬ 
larged flat head. Fig. 4. 
p * Remedies .—Remove with a pocket 
knife whenever found. Protect the 
south side of the trunks of the trees 
from the sun’s heat, either by shading 
or white washing during late winter and 
spring. 
Fig. 4.—Flat-headed Apple-tree Borer: a, 
flat-headed larva; b , the mature beetle; c, 
head of mature beetle; d, pupa. All twice 
natural size. (Chittenden, Circular 32, 
U. S. Dep. of Agr., Div. of Entomology.) 
apple twig-borer. (Amphicerus bicaudatus.) 
A cylindrical, mahogany-colored beetle, about one-third of an 
inch long, boring holes in twigs of apple, pear, cherry and other 
trees and grapevines. See Fig. 5. 
Fig. 5.—Apple Twig-borer: a, beetle dorsal view; a', beetle side view; 6, pupa fmm beneath; 
c, grub, side view; d, apple twig showing burrow; e, burrow in tamerisk with pupa at 
bottom; /, stem of grape showing burrow. All enlarged except stems showing burrows. 
(Marlatt, Farmer’s Bulletin 70, Div. Ent., U. S. Dep. of Agr.) 
Remedy .—Cut out the infested stems and destroy the borers. 
