Spotted Wing Drosophila

Sort by:
Updated: September 13, 2021

Spotted Wing Drosophila in Cherries in Southern Maryland

Growers and an alert county agent, Ben Beale, have found what most likely will be an infestation of spotted wing drosophila (SWD) in cherries in southern Maryland (St. Mary’s County). I say "most likely" because I have the cherries and the maggots but it is very difficult to identify SWD from other fruit or vinegar fly maggots.
Cherry fruit with SWD oviposition sting (white arrow), exit hole for maggot (yellow arrow) and the maggot (green arrow)
Updated: September 13, 2021

Spotted Wing Drosophila Found in Blueberries and Cherries in Maryland

A few blueberry and cherry growers in central Maryland have reported fruit damage to their crop from Spotted Wing Drosophila (SWD) this week. If you grow any small fruit such as blueberries, cherries, blackberries, raspberries it would be best if you check these crops for the presence of SWD.
Spotted Wing Drosophilia
Updated: August 26, 2021

Vegetable and Fruit News-July 2021

Fruit and Vegetable News, Volume 12, Issue 4 (July 15, 2021)
Vegetable & Fruit News header
Updated: July 20, 2021

Reminders for Monitoring and Managing Spotted-Wing Drosophila

Spotted-wing drosophila (SWD, Drosophila suzukii) is a small fly that lays its eggs into ripening and ripe soft-skinned fruit, causing direct damage and wounds that other pests and pathogens can use. Although they prefer fully colored ripe fruit, they are capable of infesting fruit that is just starting to turn color and will do so when populations are high.
Figure 1. From the top: SWD egg, small, medium, and large larvae. Scale shows 5mm. Image from Van Timmeren et al. 2017³.
Updated: July 9, 2021

Timely Viticulture

Timely Viticulture is an electronic newsletter designed to remind grape producers of seasonal vineyard needs and considerations throughout the year.
Timely Viticulture Timeline