OREST INSECT INVESTIGATIONS 
F, C, Craighead, Senior Entomologist, in Charge 
In the early part of May Dr, Craignead spent a few days at the forest 
insect field laboratory at Amherst, Mass., to discuss plans for the coming 
year of studies of the white pine weevil. Dr. Je Me Swaine, of the Dominion 
Entomological Branch, Canada, S,. T, Dana, Director of the Northeastern For- 
est ExperizentStation, amherst, Mass., and Hy, J, MacaAloney, in charge of 
the Bureau's field laboratory at Ammerst, were Present at the conferences, 
In the latter half of May Dr, Craighead spent a few days at Asheville, 
N. C., looking over the field experiments there on the southern pine beetle. 
R, Ae St. George, J. A, Beal, and the swomer assistant, R, HE, Balch, will be 
stationed at Asheville for the season, Up to the »vresent no living specimens 
of the southern pine beetle have been obtained this season, There seems to 
be an almost complete-mortality of the overwintering broods, as a result of 
the low tenyeratures of the past winter, 
tx] 
if 
Bs 
! 
\ 
' 
—————————————— a —_ 
On may le L, G. Boumhofer, stationed at Halsey, Nebr., arrived in 
Asheville to study the tip moth situation about there, with a view to obtain-. 
ing new parasites to introduce in the plantations at Halsey, Later, accom 
panied by Mr. St. George, he left Asheville for Bogalusa, La., where the tip 
moth has been causing severe losses for the past few years to the reproduction 
of young pinee Loblolly pines were found to be the favorite host, while — 
Slash pine was tut sligntly injured. Observations seemed to indicate that 
longleaf pine was almost immune from this type of injury, its principal injury 
seening to be a loss in the attainnent of height, Observations were also made 
on a series of trapetree studies that have been in progress for the last two 
years, to determine the aggressiveness of certain barkbeetles and-the condi- 
tions most favorable for their attack and the development of their broods. 
On lay 20 Messrs. Bauuhofer and St. George conferred with R, De. Forbes, 
Director of the Southern Forest Experinent Station, New Orleans, La., on cur- 
rent insect problens in the South, It was leamed that tip moth injury has 
been noted in plantations all over the northem part of Louisiana, especially 
for the past two or three years, indicating that this injury is quite general 
innthe. State, 
C. N. Bilbray, of the Louisiana Department of Conservation, stationed 
at Many, La., reported an extensive outbreak of sawfly larvae on shortleat . 
pine this year, The larvae appeared in Sabine and Vernon Parishes about April 
e8, attacking more than 26,000 acres of young growth from 3 to 5 feet highs 
It was stated that the full-grown larvae are plentiful at this time, and sug, 
gestions were made for their control. These larvae were first reported as Y 
defoliating pines in June, 1926. Mr. Bilbray also reported the browning of 
foliage of apnarently thrifty young longleaf pine trees by lepidopterous 
needle miners, extending over the sare areas in these two parishese 
On May 23 J, A, Beal gave a short radio talk on forest insectsa It 
was broadcast from Station WiNC, asheville, N. C., under the auspices of the 
Southern Appalachian Section, society of American Foresters» 
