— 2 es 
The foreign gipsy moth (Porthetria dispar L.) parasite investigations 
have been continued during the season of 1924. 5S. §S. Crossman, R. ZT. Webber, 
end S. M. Dohanian went to Europe in the latter part of February in search of 
gzipsy woth parasites for introduction into the infested area of the United 
States. 
After spending a few days at Paris, interviewing several entomologists, 
Messrs. Crossman and Dohanian proceeded to Spain, and Mr. Webber wen? to Foland 
and Hungary. 
Several medium to heavy gipsy moth infestations were visited in Spain, 
end through the kindness of Dr. M. Aullo, Director of the Laboratory of Forest 
Fauna of Spin, arrangements were mede to use two of his field stations for 
the season. Mr. Dohanian remained in Spain during the season to carry on the 
investigations. 
Messrs. Crossman and Webber spent most of the season in Poland, Hungary, © 
Yugoslavia, and Bulgaria. After finding suiteble infestations in each of these © 
countries temporary field laboratories were established. In addition to these 7 
countries, parts of Rabat and Algiers in northern Africa, France,Austria, Ger- 
many, Roumania, Czecho-Slovakia, Sardinia, end Sicily were searched for P. 
dispar infestations. 
No infestations of suitable size for parasite introduction work were 
found in the latter-nnmed countries, excepting in Algiers and Rebat. Arramge- | 
ments were made at Algiers to have shipments of gipsy moth larvae sent to Mel- @ 
rose Highlands during the season. At Rabat a heavy infestation was found, and | 

2 
Dr. Liouville, Director of the Institut Scientifique Cherifien, planned to have 
a stucy of the parasites of P. dis 6 at eects this summer. Should this 

investization show any valuable ¢i: Sites present which have not 
already been introduced into America, CS can de made to carry on such ¢ 
work. ‘ 
Pee £ ; and summer about $5,000 tachinids were sent to Melrose @ 
Highlands. Of these importations, about 50,000 are Parasetigena segregata Rond., 
end 19,000 Blepharipa scutellata R. D. These two species have only one genera- 
tion each yeer, and cae have been placed in hibernation at the laboratory. i 
The remaining material is composed of species having more than one generation : 
ennually, and in most cases the adults had issued and died before reaching ie 
rose Highlands. The species involved are Sturmia silva Hartig, Carcelia gnav 
ee Compsilursa. concinnata. Keig., and eit hp oe Ee 4et ta seo addition 
& sew specimens of Chalcis intermedia Nees, and a few cocoons of a species of 
“yposoter, Apanteles fulvipes Hal., A. vitripennis Eal., and A. melanoscelus 
Ratz. were sent to Melrose. Also about 1,000 adults of Carabus spd.? Reiche and 
i 




Le | aa a 5 ad | x! ‘ 
eid Ce.lo soma. locuisitor L. were sent to the laboratory. A few adults of > 
“een wecripsnctats L. were shipped, but all were dead when received in the 
States. ‘ 
a 
Nat 
A S. Crossmen and $. MW. Doheanian returned to the Gipsy Moth Laboratory in 
august and R. I, Webber will return early in september. a 

#. 0. Craighead, Entomologist, in Charge 
On July 28 J. C. Evenden reported that spraying operations against the 
a 
FOREST INSECT INVESTIGATIONS ) 
larvae defoliating = lodgepole pine in the Yellowstone National Park began July 24, 

