71 
species has been reared at the Lafayette Laboratory from Tiphia cocoons 
collected in various parts of Illinois and Indiana, the adults issuing 
during the month of July. Mr. H. E. Smith obtained an adult July 7, 
1913, from Tiphia cocoons collected at Wellington, Kansas, and E. G. 
Kelly informs me that he has also reared it from the same locality and 
Fic. 8. Hxoprosopa pueblensis Jaenn., pupa. 
host. From the fact that Tiphia cocoons collected in the fall were 
infested with these flies (Exoprosopa fascipennis), it is certain that 
infestation originates in the summer or fall previous to emergence, and 
since they are incapable of entering the soil, and in view of the further 
Fic. 9. Tiphia cocoon from which Fic. 10. Tiphia cocoon showing 
the hyperparasite (HExopro- emergence hole made by the 
sopa) has issued. * adult, 
fact that they frequent flowers’ and feed on honeydew produced by 
aphids at the same time that the Tiphias are active, it is conceivable that 
the flies oviposit on the flowers or possibly directly on the Tiphias and 
that their eggs are carried away by the wasp and deposited with its own 
egg on the Phyllophaga grub. 
