There will be a meeting held in San Martin, California concerning the spotted wing drosophila. The meeting is open to all who are interested, please refer to the following agenda:http://awqa.org/attachments/spotted_wing_09.doc
Several strawberry growers have identified a consistent pattern to spotted wing drosophilid infestation in strawberry.
Spotted wing drosophilid apparently lays eggs beneath the skin of the fruit, and after a few days the eggs hatch. As the larvae develop, a soft area at the area of infestation develops. There is no hole apparent in the fruit, see close up in first photo below, but the bruise and softening are quite apparent, and many pickers should be able to identify these fruits as culls.
On taking several samples of these fruit, and on cutting open the bruise, one finds from one to two larvae as in the second photo below.
Intrepid can be thought of an upgrade of Confirm, and is generally more efficacious, as it has longer residual activity against some pests. In crops where it is currently registered, Intrepid has a fairly short pre-harvest interval. For example, the preharvest interval for Intrepid is one day in strawberries, versus 14 days for Confirm in caneberries. With this in mind, it will be worth pursuing an Intrepid label similar to strawberries in caneberries. Replacing Confirm with Intrepid for most crop uses is a worthy goal.
There are pesticides mentioned for management of leafrollers in this article. Before using any of these products, check with your local Agricultural Commissioner's Office and consult product labels for current status of product registration, restrictions, and use information.