Photo via Alamy. Dreves says unless the berry has rotted, itâs still perfectly safe to eat. The fly lays eggs in the ripening fruit. Infested fruit are safe to eat. Claim: A saltwater solution will force insect pests out of infested strawberries. Larvae are tiny, white cylindrical maggots a little longer than 1/8 inch when full grown. One to several larvae can be found feeding within a single fruit. May is the time to look for spotted wing drosophila (SWD), a relatively new pest of fruit plants in Maryland. Jerry Brust, Ph.D., Extension Vegetable Specialist gives you the details and photos in his (PDF) fact sheet.Two popular backyard fruit crops, blackberry and raspberry, are favorite host plants for SWD. â A viral video showing worms crawling around split cherry has some refusing to eat cherries again saying they aren't safe. But most people would rather not eat insect-infested fruit. Spotted wing drosophila (SWD) is a fruit fly that's on the move. It attacks soft fruit like raspberry, blackberry, strawberry and blueberry. When the eggs hatch, the larvae feed inside, which causes one side of the berry to soften and collapse. You donât notice the larvae until later. I included a video actually showing the larvae crawling around in the raspberry. Under conditions favorable to the SWD, the fruit begin to collapse as quickly as two days after the eggs were laid. ... Fruit Fly or a Spotted Wing Drosophila or SWD. Back to Problems of Tree Fruits. Fruits like cherries will show visible dents around the larvae. Spotted wing drosophila may be mistaken for other adult flies and maggots. What is a spotted wing drosophila fruit fly trap? Safe repellents that protect fruit from spotted wing Drosophila found by University of California - Riverside The males have a characteristic dark spot on tip of wings. And unlike other fruit flies that target mostly rotting or fermenting fruit, SWD targets fruit right on the tree, laying their eggs in the young fruit and eventually turning it into a wormy mess. After maturing, the larvae partially or completely exit the fruit to pupate. This is an invasive pest that has ⦠This insect is the spotted wing drosophila, says Don Lewis, PhD, a professor and extension entomologist at the Iowa State University department of entomology in Ames. Spotted wing Drosophila (SWD), ... Eggs hatch in 2 to 72 hours, resulting in small larvae in harvested fruit. This is a new pest in the Southeast. ... A PHI is the minimum amount of time between the insecticide application and when it is safe to harvest. Spotted wing Drosophila (Drosophila suzukii) larvae in a grape. SWD will overwinter in Kentucky as it survives in states to our north and parts of Canada. 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