-392- 
HEWLLOCK SI ■.:. 
. • j autbreak of the hemlock spanworm (' . -a fiscellaria GuenJ 
reported last year from Wisconsin has practically died. out. During the 
past se».oon f severe cut limited outbreak occurred in Maine and. small 
outbreaks in northern r.ov; York State "and sever:. ± sections of Ontario. 
. D PINE J33TLS. 
The epidemic of the mountain pine beetle [ Dendroc tonus monticolae 
Hopk.) which has been under may for sever.'.] years in Montana Has nov de- 
stroyed fron 50 to 70 per cent of the bimber on the infested area. Durinj 
the past t fo years The infestations have spread into the 3ig Hole Basin 
and thel.iissoula : ' t tonal Forest, from the east fork drs-inage of the bitte: 
Root. Another epidemic of this insect Las st. rted throughout the white- 
pine stands of northern Idaho. 
.TEFFBEY-PINE / LE. 
The infestations of the Jeffrey^pine beetle (bon d roc tonus Jeffrey i 
Hopk.) in the Inyo National Forest lave materially declined this year. 
In the Oregon-California Control Project area, however, the heaviest 
losses recorded in the past 10 years were observed this year and more 
than 350,000 oo..rd feet of timber were killed. 
DOUGLAS P3 , ... 
Throughout the western part of Montana The Douglas fir beetle 
( Dendroc tonus pseudotsugae Hopk.) has been destroying rather alarming 
quantities of Douglas fir annually. The damage occurs in groups of trees 
scattered throughout the forested areas. 
' sue 
,ud\ o: 
k slight outbreak oi the spruce bud; rm 
in a nursery in Ohio .. bed this season. 
umiferana Clem. 
Jonsiderable damage . n s 
, the sastera border of Michigan and 4,500 square miles north of 
?hor Lake in Ontario was badly infested. This latter outbreak has been i: 
progress since 19£2 and has resulted in the death of most of the first 
decidedly retarded the growth of the spruce. On the mainland east 
;:' I ocse Island in the vicinity of Lake V/innipeg, Manitoba, it h' s entire- 
ly Hilled out the mat ire balsam end has decidedly weakened white spruce. 
!m. infestation vvhich has been under way in the southern half of Cape Bret 
Island has decidedly .abated during the past season. 
LAHCH SAWFLY. 
The outbreak of the larch sawfly (Nematus or ichsonii Hartig) 
the Spruce Woods Reserve in Manito 3 been V3ry effectively reduced 
the introduced parasite I ssolie us t .H u.q: ; Mori., 86 per cent of 
cocoons b round p r s bi3 
. 
