If you grow soft fruit like strawberries, raspberries, cherries etc watch out.

[delcecchi]

For Spotted wing Drosophila.

How to monitor ....

http://blog.lib.umn.edu/efans/ygnews/2014/06/start-trapping-for-spotted-win.html

Quote:

Start Trapping for Spotted Wing Drosophila

By hahnx002 on June 19, 2014 8:15 AM

If you grow raspberries, strawberries, cherries, blueberries, or other susceptible soft-skinned fruit, start a trapping program to monitor the potential presence of spotted wing Drosophila (SWD). A single SWD has been detected on June 6 in a trap set on the University of Minnesota St. Paul campus. Last year, the first SWD was trapped on June 27. It is safe to assume that SWD are present throughout the state.

Home gardeners can monitor SWD with homemade traps. Use a large plastic cup with a cover and make several 3/16th inch diameter holes near the top. Put one to two inches of apple cider vinegar into the cup. Add either a yellow sticky card slightly above the vinegar or a little bit of liquid soap, such as dish soap. Hang traps on branches in a shaded location near fruit. Check traps at least once a week, replacing the sticky card (if used) and apple cider vinegar bait. Dispose of the old apple cider vinegar away from the trap location.

Early detection is very important when dealing with SWD as they can rapidly reproduce to large numbers and damage fruit. Management is a three pronged approach, monitoring (trapping), sanitation, and insecticide treatments.

And more about them at

http://www.extension.umn.edu/garden/insects/find/spotted-wing-drosophila-in-home-gardens/index.html

Quote:

Spotted Wing Drosophila (SWD), Drosophila suzukii, is an invasive insect pest mainly of raspberries, blackberries (and other cane berries), blueberries, grapes, and stone fruit. Native to Asia, SWD was first found in North America in 2008 in California, and is currently found in Florida, Michigan, Wisconsin, and most of the primary fruit growing regions of the U.S. In August of 2012, the first confirmation of SWD was made in Minnesota in Ramsey, Hennepin, Anoka, and Olmsted Counties and as of December had been found in 29 counties (Figure 6). To date the primary crop attacked has been raspberry but wild blackberries were also found to be infested.

(more at link)