14 
FARMERS’ BULLETIN 763. 
is found another, Monarthrum fasciatum Say (fig. 15) of similar 
appearance and food habits. 
The female beetle bores through the bark and 
into the wood for a short distance and deposits 
Fie. 15. — Monarthrum 
fasciatum: Adult, or 
Much en- 
beetle. 
larged. (Original.) 
her eggs. 
Later the short larval galleries are 
constructed outward from the main gallery 
made by the parent beetle. 
(See fig. 16.) 
Breeding takes place only in diseased, dying, 
girdled, and 
felled trees. 
The insect is 
not a common 
orchard pest, 
but should it 
occur at, any 
time in injurious 
numbers. the 
remedies recommended herein for 
barkbeetles may be resorted to. 
Fic. 17.—The pear-blight beetle (Anisandrus 
pyri): Adults, or beetles, and enlarged 
view of antenna of female beetle, All 
much enlarged. 
(Hubbard. ) 
Fig. 16.—Work of the apple wood- 
stainer (Monarthrum mali) in apple 
wood. Beetle, approximately nat- 
ural size, at left. (Original.) 
THE PEAR-BLIGHT BEETLE.’ 
The pear-blight beetle (fig. 
17) has been the cause of 
occasional injury to fruit 
trees for many years. It 
bores into the twigs and 
branches of apple, pear, 
peach, and plum trees and 
causes a dying back of the 
wood, the injury resembling 
that of the bacterial disease 
common on apple and pear, known as pear blight or twig blight. 
The insect also attacks the trunks of-trees and is not confined to 
orchards, but infests a number of hardwood forest trees, and at least 
1Anisandrus pyri Peck 
; order Coleoptera, family Tpidae, 
ee 
ae 
