4 RESULTS FROM GIPSY MOTH I'AKASITE LABORATORY. 



Massachiisotts and tlie Bureau of Entomology, at Melrose High- 

 lands, Mass., from the eggs of Porilietria dispar received from Tokyo, 

 Japan, from Prof. S. I. Kuwana, Entomologist of the Imperial Agri- 

 cultural Experiment Station at Nishigahara, Tokyc^, after whom the 

 species is named in pai'tial recognition of his great services to the 

 United States in sending parasites from Japan. 



Type. — No. 12158, U. S. National ]\Iuseum; Gipsy Moth Laboratory 

 No. 1698. 



This species appears to be an important parasite of the gipsy 

 moth. It has been imported in verv large numbers through the 

 courtes}' of Piofessor Kuwana. The great majority of the specimens 

 have been dead upon arrival, but small numbers have emerged living 

 at the Gipsy Moth Parasite Laboratoiy at Melrose Highlands. The 

 species appears to be more common in the vicinit}' of Tokyo than 



Fig. l.-Srliednin huvana': Vemale. Hiizlily iriufjnified. (Orisiual.) 



in other parts of Japan. This parasite in the lield issues froui dispar 

 eggs in the autumn after they have been deposited. For some 

 reason it has not been reared freely from Japanese eggs collected and 

 forwarded during the winter. The possible inference that it does 

 not hibernate in the eggs of this host in Japan is not in accord with 

 its behavior in America. There is ami)le time for two and possibly 

 three generations in the same autumn after the gipsy moth has laid 

 its eggs. The species is easily controlled in the laboratory, as deter- 

 mined b}'- Mr. Fiske, and more than twenty thousand have been 

 reared and liberated from a total importation of about twenty living 

 individuals. The early stages have been worked out at the laboratory 

 by Messrs. Fiske and H. F. Smith, and are very remarkable. It 

 attacks the eggs of its host when freshly deposited and with equal 



