Utah State University Extension
Spotted wing drosophila (SWD) (Drosophila suzukii) is a new fruit pest first introduced to the United States in 2008. SWD was detected in Davis County, Utah in 2010. SWD is similar to other vinegar flies (genus Drosophila), except they can infest unripe fruit.
Stanley, Cory A., "Spotted Wing Drosophila Monitoring" (2012). All Current Publications. Paper 961.