





2 MONTHLY LETTER IGF THE-BUREAU OF ENTOMOLOGY | 
UNITED STATES | TOF AGRICULTURE _ 
1 ET aa eae a 
Number 149 ) eee uy j- September, 1926 
i re j 


FOREST INSECT INVESTIGATIONS 
athe F. Ov Craighead, Entomologist, in Charge 
Dr. Craighead returned early in August from a two months! field ex- 
amination of various control and research projects of the Division. Con- 
Siderable time was spent ih California, where an enormous amount of interest 
in control work has developed during the past two or three years. Private 
timberland owners are taking the initiative in urging the need for greater 
protection from losses by the barkbeetle.. The unusually large forest fires 
in the summer interfered: seriously with work in the Northern Rockies. 
\ : : 
On his return from the West, Dr. Craighead stopped briefly at Halsey, 
Neb., where attempts are being made to control the tip moth by introducing 
parasites. About the middle of August he spent one week in the Northeast, 
investigating the white pine weevil, . 
, 
The field men are now closing up their summer4s work, and shortly 
all will have returned to winter headquarters in their respective regions, 
Dr. Alfred BE. Emerson, Professor of Ecology at the University of 
Pittsburgh, has been granted a Guggenheim fellowship for a year's study in 
Europe, to work on the phylogeny of termite castes, Dr. Emerson will visit 
termite specialists and museums in Italy, Sweden, and Denmark, and will also 
study in the field the primitive Hodotermes in Tunis. Dr. Snyder has pre- 
pared about 120 species of identified termites from the U. S. National 
Museum collection for comparative study and exchange with European museums 
by Dr. Emerson. Dr. Emerson visited the U. S. National Museum from September 
20 to 23, and sails for Europe on September 29, He was given a dinner at 
the Cosmos Club on September 22 by entomologists and specialists of the 
Bureau of Entomology and the National Museum. 
William Middleton recently visited West End, near Gordonsville, Va., 
where he is attempting to establish introduced parasites of the elm leaf 
beetle. The beetle infestation is rather heavy this year and the trees are 
Showing severely the effects of years of defoliation. 
Mr, Middleton has arranged the forest-insect collection of work’ 
Specimens and placed it in cases for exhibit. It is expected to have the 
series increased, the names brought up to date, and the arrangement perfected 
as. time and assistance permit. ‘The exhibition is housed in drawers in new 
cases in the Forest Insect Laboratory Room of the Inseetary Annex. 
