43 
been reared from several different Bombycid larve at this office. It 
appeared both in 1895 and 1896 in the present series of observations. 
On September 16, 1895, a single adult issued from an Orgyia cocoon 
taken September 7. In the different series of rearings undertaken to 
ascertain percentage of parasitism eighteen specimens issued, five in 
September, 1895, and the remainder in July, 1896. 
Euphorocera claripennis Macq. 
This was the most abundant of the Dipterous parasites. Like the 
other species, it occurs practically all over the country. It has been 
reared at this office from twenty-seven distinct species of Lepidoptera, 
including among the species of greatest economic importance A grotis 
ypsilon, Aletia argillacea, Anarsia lineatella, Ceratomia catalpe, Datana 
ministra, Feltia herilis, Hy- 
drecia immanis, Hyphantria 
cunea, Leucania albilinea, and 
Mamestra trifolit. 
It was first reared on Sep- 
tember 21, 1895, from a pupa 
of Orgyia collected Septem- 
ber 7, the Tachinid larva hav- 
ing left the chrysalis before 
pupating. September 25 a 
specimen issued from a pupa- 
rium found within a chrysalis 
of Orgyia on September 6. 
On September 24 one speci- 
men issued from a larva found 
September 7 with a single Fic. 23.—Huphorocera cluripennis: Adult with enlarged 
Tachinid egg attached to it. gators and with empty puparium at right—enlarged 
Another issued on the same "2" 
day from a larva found September 4 with a Tachinid egg attached to 
it, and still another from a larva found September 11, also with a 
Tachinid egg upon its back. This last had pupated within the body 
of its host. On the 30th of the same month a specimen issued from 
a caterpillar found in its cocoon September 11, and in which Pimpla 
inquisitor had been observed to oviposit. 
Ninety-seven specimens in all were reared; eighty-one of them issued 
between September 19 and October 15, 1895, a single specimen issued 
April 16, and the remainder appeared from July 14 to 28, 1896. The 
usual method of hibernation here must also be in the imago state, 
although in the case of the fly which issued April 16 the puparium 
must have overwintered. 
