1918] Wilcox—A Parasite of the Oriental Moth 17 
type. An analogous case is found in the vertebrates in which the 
excised heart of such a comparatively generalized type as the frog 
is much more resistant than the heart of a specialized mammalian 
type like the dog, the cat, or man. 
There is every reason to think that pulsatile vessels will be 
found in most, if not all, families and genera of the Hemiptera and 
Homoptera. Their discovery in the Aphidide simply adds to the 
already convincing evidence of the close relationship of these two 
groups. 
ASCOGASTER CARPOCAPS4, A PARASITE OF THE 
ORIENTAL MOTH. 
By A. M. Witcox, 
Gipsy-moth Assistant, U. S. Bureau of Entomology. 
The Oriental moth, Cnidocampa flavescens Walk., a native of 
Japan was first discovered in this country in 1906. Although at 
present the infestation is confined to a small area, there is a possi- 
bility of the moth becoming a widespread pest. 
Several attempts have been made to rear parasites from the 
larvee and cocoons of the moth, but as far as the writer knows, 
none of these previous attempts have been successful. During 
the spring of 1917 several of the cocoons were collected in Dor- 
chester, Mass., and placed in rearing boxes. During the month 
of June the adults began to appear and a single Braconid parasite 
emerged at the same time. The specimen was determined by 
Prof. C. T. Brues of the Bussey Institution, Harvard University, 
as Ascogaster carpocapse Viereck. ‘The species was first described 
as Chelonus carpocapse in 1909 by Viereck.!. The Codling moth, 
Carpocapse pomonella was named as the host insect. 
The species may be recognized by the absence of segmentation 
on the abdomen and by the presence of four transverse nipple-like 
prolongations on the outer and upper edge of the posterior face of 
the metathorax. It can readily be separated from Chelonus fissus 
Prov., a common, similar species, by the absence of pubescence on 
the eyes, and the different wing venation, the first submarginal and 
first discoidal cells being separated in A. carpocapsa@, while in C. 
fissus they are confluent. 
1Proc. Ent. Soc. Washington, Vol. 11, p. 43. 
