. Bulletin. Fig. 9. Tiphia cocoon from whichthe hyperparasite (Exopro-sopa) lias issued. Fig. 10, Tipliia cocoon showingemergence liole made by tlieadult. fact that they frequent flowers and feed on honeydew produced byaphids at the same time that the Tiphias are active, it is conceivable thatthe flies oviposit on the flowers or possibly directly on the Tiphias andthat their eggs are carried away by the wasp and deposited with its ownegg on the Phyllophaga grub. 72 Exoprosopa piieblensis Jaenn. (Walton and Cole det.), a speciesremarkably similar to fascipennis, was reared by E. G. Kelly from a
. Bulletin. Fig. 9. Tiphia cocoon from whichthe hyperparasite (Exopro-sopa) lias issued. Fig. 10, Tipliia cocoon showingemergence liole made by tlieadult. fact that they frequent flowers and feed on honeydew produced byaphids at the same time that the Tiphias are active, it is conceivable thatthe flies oviposit on the flowers or possibly directly on the Tiphias andthat their eggs are carried away by the wasp and deposited with its ownegg on the Phyllophaga grub. 72 Exoprosopa piieblensis Jaenn. (Walton and Cole det.), a speciesremarkably similar to fascipennis, was reared by E. G. Kelly from aTiphia cocoon obtained at Wellington, Kansas (Fig. 7, 8). Anthrax parvicornis Coq. was obtained by the writer in 1913 fromTiphia cocoons collected either at Rockford, 111., or Lafayette, Ind., theadnlt issuing previous to June 30. The exit hole of this species, as wellas that of the two species mentioned above, is made in the Tiphia cocoon. Fig. 11. A hyperpara.«!ite (Macrosiagon pectinatus Fabr.)—a parasite of Tiphia. by cutting out a circular cap at the larger end of the cocoon, the cutbeing as clean as though made with a sharp knife (Fig. 9, and PI. Ill,Fig. 7). It dififers in this respect from the emergence hole made by theTiphia adult, which is ragged, and although always made at the largeend, is at one side of the tip (Fig. 10). The interesting rhipiphorid beetle Macrosiagon pectinatus Fabr.(Fig. 11) was first recorded as having been reared from Tiphia cocoons 73 by Dr. C. V. Riley in 1874 (59), and its parasitic habits have since beenoccasionally referred to in literature. We have reared it from Tiphiacocoons collected in Illinois and Indiana, once from a cocoon collectedby H. E. Smith at Hadley, Mass., and again from cocoons collected byJ. A. Hyslop at Hagerstown, Md., and in all cases the beetles issued inJuly excepting the last collection—which issued May 15—and one fromMt. Vernon, 111., which issued Aug
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