Spotted wing drosophila (SWD), Drosophila suzukii, is an insect pest of economically valuable small fruit and tree fruit crops. Drosophila suzukii, commonly called the spotted wing drosophila or SWD, is a fruit fly. [10], Native to southeast Asia, D. suzukii was first described in 1931 by Matsumura. This small insect has been in Hawaii since the 1980s, was detected in California in 2008, spread through the West Coast in 2009, and was detected in Florida, Utah, the Carolinas, Wisconsin and Michigan for the first time in 2010. Spotted Wing Drosophila A new invasive pest of Michigan fruit crops Rufus Isaacs and Noel Hahn, Department of Entomology Bob Tritten and Carlos Garcia, MSU Extension MSU Extension Bulletin E-3140 New • October 2010 Introduction The Spotted Wing Drosophila (SWD) is a small vinegar fly with the potential to damage many fruit crops. Spotted wing drosophila is a small vinegar fly from East Asia that lays its eggs in softer, thin-skinned fruits, such as berries. [3] By the 1980s, the "fruit fly" with the spotted wings was seen in Hawaii. Economic impacts are significant; losses from large scale infestation (20% loss) across the US alone could equate to farm gate impacts > $500M. The spotted wing drosophila (Drosophila suzukii) is a fruit fly which originated in Japan and has spread across the world, first to the USA, then mainland Europe, before first being detected in the United Kingdom in 2012 at NIAB EMR in Kent. The spotted wing drosophila (SWD) is a fruit fly that is a 1/16 to 1/8 inch long with red eyes and a yellow-brown thorax and abdomen. There are different types of traps, both commercial and home-made, that are effective in monitoring it. Spotted wing drosophila continue to plague raspberry, blackberry, blueberry, and grape growers. Whenever travelling to New Zealand, always declare any food or fruit in your luggage. Photo by John Davis. Generally, soft-skinned fruit become vulnerable to attack as they begin to soften and tur… [44][45][46] The yeast species found to be most frequently associated with D. suzukii were Hanseniaspora uvarum, Metschnikowia pulcherrima, Pichia terricola, and P. [21] As D. suzukii continues to spread, most of the states will most likely observe it. The adult males have a single black spot on the tip of each wing, but the females lack this distinctive marking, making it difficult to identify this insect. [26], In areas where D. suzukii has already been established or where its activity has been monitored, there are different ways to control it. [6] The larvae are small, white, and cylindrical reaching 3.5 millimetres (9⁄64 in) in length.[4]. Adults: Florida is home to at least 27 addiional Drosophila spp. including Drosophila melanogaster. It looks very much like other fruit flies, but unlike most fruit flies, which attack rotting or over-ripe fruit, SWD attacks healthy, undamaged fruit. The spotted wing drosophila is an invasive pest from Asia, first discovered in California in 2008. [2], Native to southeast Asia, D. suzukii was first described in 1931 by Matsumura, it was observed in Japan as early as 1916 by T. Spotted Wing Drosophila, Drosophila suzukii (Matsumura) a new fruit pest of concern especially for strawberry, blackberry and blueberry growers. Detections were made for the first time in Utah and Michigan in late summer/fall of 2010. There are black stripes down its abdomen. Steck GJ, Dixon W, Dean D (2009) Spotted Wing Drosophila, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), a fruit pest new to North America. Spotted Wing Drosophila (Drosophila suzukii), SWD, is a recently introduced new species of fruit fly in the United States.It was first found on the west coast in 2008, but has rapidly colonized many fruit producing regions of the country. Spotted wing drosophila (SWD), Drosophila suzukii, is an insect pest of economically valuable small fruit and tree fruit crops. The adults are small (2-3 mm) flies with red eyes and a pale brown thorax and abdomen with black stripes on the abdomen, see Figure 1. [12] Larvae may leave the fruit, or remain inside it, to pupate. Spotted Wing Drosophila. EMERGING PEST: Spotted Wing Drosophila-A Berry and Stone Fruit Pest. [17] In Fall 2010 the fly was also discovered in Michigan[18] and Wisconsin. Management-chemical control: HOME USE. 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. Timing of the sprays is important to effectively controlling it. Biology Spotted wing drosophila (SWD), Drosophila suzukii (Matsumura), is an exotic pest of Asian origin. 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