43 
been reared from several different Bombycid larvae 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 Agrotis 
ypsilon, Aletia argillaeea, Anarsia lineatella, Ceratomia catalpce, Datana 
ministra, Feltia Iter His, Hy- 
drcecia immanis, Hyphantria 
cunea, Leucania albilinea, and 
Mamestra trifolii. 
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 23 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 
Tachinid egg attached to it. 
Another issued on the same 
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. 
Xinety-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. 
Fig. 23. —Euphorocera claripennis: Adult with enlarged 
antenna and with empty puparium at right — enlarged 
(original). 
