Abstract
Seven species of parasites were recovered from the puparia of Oscinella frit (L.) over a three-year period at Blacksburg, Virginia. They were: Spalangia drosophilae Ashmead (Pteromalidae), Hexacola hexatoma (Hartig) (Cynipidae), Bubekia fallax Gahan (Pteromalidae), Trichomalus statutus (Foerster) (pteromalidae), Callitula bicolor (Spinola) (Pteromalidae), Halticoptera aenea (Walker) (Pteromalidae), and Horismenus texanus (Girault) (Eulophidae). H. hexatoma and T. statutus were new North American records: O. frit was apparently a new host record for B. fallax and H. texanus . The parasitism rate was generally low in each of the three generations of O. frit . Either the parasites were not strongly oriented to the frit fly, or they were not well adapted to its environment, as none of the parasites were collected during each year of the study
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