Abstract
Five addition members of woodland-inhabiting Drosophilidae were found capable of transmitting the oak wilt fungus, Ceratocystis fagacearum (Bretz) Hunt, in coutrolled tests in Ohio following the success in obtaining such transmission with Drosophila melanogaster Meig. previously. These included Drosophila putrida Sturt., D. funetris Fab., D. tripunctata Loew, D. busckii Coq., and Parascaptomyza disticha Duda. Pomace flies were obtained by rearing them from oak wilt fungus mat cultures or slices of banana used as bait in traps set out in woodland areas and from mushrooms and decaying man drake fruits collected in such areas. Oak wilt fungus mat cultures were used as media for re-rearing the flies in sufficient numbers for testing. Fungus transmission was obtained by allowing the flies to feed first upon fresh, sporulating oak wilt fungus mat cultures and shortly afterward upon fresh xylem wounds of healthy oaks. It was shown from the results of the tests that regardless of certain possible limiting factors, these six members of woodland-inhabiting Drosophilidae must be considered as potential vectors of the oak wilt fungus.
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