-16- 
that with all the tulips brought into California 
insect has not at sor.e time "been introduced In fact, check 
"bulbs planted in 1921 were infested with aphid "but not being 
dognizant of the status of that particular aphid nothing further 
was thought of it» These recent developments lend weight to the 
belief that it was the tulip aphid. 
FOREST A 
SHADE-TREE INSECTS 
YELLCT PINE 
WESTERN PINE BEETLE ( Den droc tonus brevicomis Lee) 
California A. J» Jaenicke (December, 1922): This beetle killed 33,000,000 
board feet of timber in 1921 over an area of 430,000 acres in 
the Modoc National Forest- Plans are now being considered to 
combat the pest on this area- The damage airounts to over 
$100,000. 
J. M. Miller (December, 1922): This beetle killed 100,000,000 
board feet of timber over an area of about 300,000 actes 
in the California National Forest during 1921. The loss amounted 
to at least $300,000 and -was very conspicuous, whole hillsides 
appearing red as though swept by fire« 
Ore 
A- J. Jaenicke (December 1922): This insect killed 40,060,000 
board feet of yellow pine valued at $120,180 during 1921 on the 
area surrounding the control project in southern Oregon (Klamath 
and Lake Counties), covering 3,3150, acres- This loss is not 
ruch above nhe normal and approach^ one-fourth of one per cent 
of the sta nd - each year. 
F. K» Keane (March 12): On the control project 
this insect killed 91,961,000 board feet of lumber in 1921, at 
an estimated value of $275,883. This was determined by a 
5 per cent cruise of the territory, which included 1,250,000 
acres of forested land. A cooperative control project is now 
under -vay to curb this loss. 
ELM 
EUROPEAN- ELM SCALE ( G-ossyparia smria Mo deer) 
Nebraska M« H. Swenk (March 10) : The elm scale was injuring the trees 
in the park of one of our central Nsbraska cities* 
Idaho Don B» Whelan (March 16) s This insect is destroying many fine 
trees in the City of Boise- Spraying with miscible oil is now 
being done. 
t&SSfc** 
9S*& 
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