. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BIOLOGICAL STUDIES OF THE GREEJST CLOVER WORM 17 DIPTEBA One male of Compsilura concinnata Meig. was reared from a Plathy- . pena scabrajpupa, the larva of which was collected at Indian Orchard, Mass., by D. A. Ricker. This tachinid was imported from Europe to aid in controlling the gipsy and brown-tail moths in New England and has proved a very effective enemy against them. It was first introduced in 1906, but the most satisfactory colonies were planted in 1909. It is known to parasitize a large number of hosts in Eur
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BIOLOGICAL STUDIES OF THE GREEJST CLOVER WORM 17 DIPTEBA One male of Compsilura concinnata Meig. was reared from a Plathy- . pena scabrajpupa, the larva of which was collected at Indian Orchard, Mass., by D. A. Ricker. This tachinid was imported from Europe to aid in controlling the gipsy and brown-tail moths in New England and has proved a very effective enemy against them. It was first introduced in 1906, but the most satisfactory colonies were planted in 1909. It is known to parasitize a large number of hosts in Europe and has already been reared from a number of native hosts. Exorista blanda O. S. is recorded by Chittenden {2) as having been reared from the pupa of Plathypena scabra September 7, 1899. Exorista amplexa was reared from this host at Hagerstown, Md., by C. M. Packard in 1914. Hypochaeta eudryae Smith 10 was reared by the writer at Knoxville, Tenn., in 1916. Those observed emerged from the larva stage of the host and formed puparia about 5 millimeters long. Hypochaeta longicornis Schiner n was reared by W. R. McConnell at Greenwood, Miss., September 9, 1913. Phorocera jlavicauda V. d. was reared by E. H. Gibson at Greenwood, Miss., in 1913 and by the writer at Knoxville. Tenn., in 1916. Phorocera claripennis was reared by W. E. Pennington from a larva collected at Hagerstown, Md. The host larva was collected June 21, 1915; the dipterous puparium was formed July 6; the dipteron adult emerged July 15. trichophora rujicauda V. d. was more abun- dant at Knoxville, Tenn., in 1916 than any other parasite reared from Plathypena scabra. Speci- mens of this tachinid were also reared by the writer at Nashville, Tenn., in 1915; and by E. H. Gibson at Greenwood, Miss., in 1913, F. M. Moody at Charleston, Mo., and R. W. Leiby at Terra Ceia, X. C. (10). The host caterpillars of specimens reared at Knoxville each showed a dark spot bearing a small round pore opening
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