PARASITES OF GIPSY- MOT II PUP.E. 
249 
The egg which is figured (fi*r. 52) was dissected from a female which 
was imported in 1909 with cocoon masses of the brown-tail moth and 
which was evidently hibernated. She was ^iven no opportunity to 
oviposit. In 1910 several females were collected in the open in June, 
and these, upon beiii£ supplied with fresh pupae of the brown-tail 
moth, immediately oviposited. 
The very characteristic larvae (fig. 53) feed externally upon the 
pupje of taehinids within the puparium, hut 
internally within the pupa* of Lepidoptera. 
The pupa? (figs. 54, 55) are also characteristic, ^S^^^S^g 
and the appearance of that of the female i- na.82. Uonoiontomer** 
indicated by the accompanying illustrations. * reus: B » (iro;1,l - v pn - 
X /r > « m . i% • larged. (Original.) 
The exit hole (fig. 50) Jell m the e;ipsy-moth 
puptB IS invariably smaller than that left by Chalcis, and Larger than 
that of Diglochis. It may be located anywhere, in which respect it 
differs from any of the Larger of the pupa] parasites. 
As a secondary parasite; Monodontomerus has been reared from 
tachinid puj)aria upon numerous occasions both from those which 
have been received from abroad and from those collected in America. 
It Was rather expected «»f it that its attack would be confined to those 
FlG. 53. MnnodonlnvKTiis 
sermx: Larvi.. <; really 
enlarged. (Original.) 
Fig. 54. Monodonlomeras 
serevs: Pupa, side view. 
Greatly enlarged. 
(Original.) 
Fig. 55.— Monodonto- 
mrrus xreus: I'upa, 
ventral view. Great- 
ly enlarged. (Orig- 
inal.) 
which were immediately associated witli one or another of its chosen 
hosts, but as usual it did the unexpected, and it has been reared from 
Conipsilura puparia which were collected at the base of trees upon 
which the caterpillars of the gipsy moth had been common. It has 
also been reared from taehinids parasitic upon the tussock moth (and 
from the tussock moth as a primary parasite), from the tent cater- 
pillar, in which it was apparently parasitic upon Pimpla, and from 
the cocoons of Apanteles lacteicolor Vier., the imported brown-tail 
moth parasite. Like another anomalous species, Pteromalus egregius, 
