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FOREST INSECTS 
The susceptibility of drought-affected trees to insect attack 
is being noted at Ashville, N. C. From this point R. A. St. George re- 
ports: "Upon the request of C. D. Beadle, manager of the Biltmore Estate, 
scme fifty Bohtan pines were examined for insect attack. It was deter-— 
mined that this introduced pine was being attacked by Ips calligraphus 
and other beetles usually associated with weakened trees. It is believed 
that the severe drought of last season, combined with the one of this 
year, weakened them sufficiently to attract these secondary beetles to 
them. The injury was first noted last fall, it becoming much more severe 
-. this summer. The surrounding native white pines whick are considered to 

be much more hardy were not affected." 
L. G. Baumhofer, Halsey, Nebr., reports that Campoplex frustra- 
nae Cushman, which was introduced into the Nebraska National Forest from 
Virginia in 1925 as a parasite of the pine tip moth (Rhyacionia frus- 
trana Comst.), and which has been spreading naturally and demonstrating 
increased parasitism since that time, showed a general reduction in num- 
bers this season. There was some increase in moth population. 
Of other insect pests in this region Mr. Baumhofer says that the 
seriousness of a heavy grasshopper infestation in the Nebraska National 
Forest became evident early in July. "Yellow pine trees as old as seven 
years in the field were having branches partially girdled and patches of 
bark on the bole badly eaten. * * * The Forest Service has been carry- 
ing on control with poisoned bran mash, toprotect about 1,000 acres of 
well-established young plantations of these trees." 
The aerial war against the hemlock looper (Ellopia lugubrosa 
Hbst.) in southwestern Washington was begun by F. P. Keen and M. J. 
Buckhorn on July 3, when a monoplane started spreading calcium arsenate 
dust over the infested area. Mr. Keen says: '"'The outbreak of the loop— 
ers had given promise of being a major forest catastrophe, for in three 
years’ time more than 7,200 acres were known to be infested with a ten- 
fecld increase each year. * * * A 65 per cent reduction was secured on 
one set of traps in the first few days following the application, and 
this was gradually increased to a 70 per cent reduction two weeks after 
the dustiig had been completed." 
. .-H, J. MacAloney, Amherst, Mass., reports the results of a trip 
made in July to, the islands of Martha's Vineyard to carry out direct con- 
trol of the white-pine weevil (Pissodes strobi Peck). He says: "Bighty- 
one infested leaders were removed. * * * This is an increase of about 
30 over last year and can be explained chiefly by the fact that a new in- 
fested area was discovered this summer. * * * It is expected that next 
year the infestation will be considerably decreased." 
Re C. Brown reports concerning the importation of tachinid para- 
sites, the last shipment being received at the gipsy moth and brown—-tail 
moth laboratory on July 17: "The following is a list of the various 
