Summary: The objectives of this project were: 1. To expand the survey of fly responses to traps baited with apple and other fruit volatiles at strategic host localities in central and western Washington. 2. To complete the identification of volatiles from black hawthorn, ornamental hawthorn, snowberry, and apple fruit. 3. To conduct extensive behavioral tests of the responses of apple maggot from Washington to volatile blends identified from black hawthorn, ornamental hawthorn, snowberry, and apple.
