Stratiolaelaps - Predatory mites for fungus gnat and thrips control

Stratiolaelaps scimitus ‘Womersley’ (formerly Hypoaspis miles) is a native species of soil dwelling mite, which feeds on small insects and mites (e.g., springtails, root mealybug crawlers, spider mites) and is used primarily to control fungus gnat larvae and the soil-dwelling stage of thrips.

To control high numbers of fungus gnats, use Stratiolaelaps along with beneficial nematodes or Bacillus thurinigiensis israelensis (BTI), both of which control the larval stage of fungus gnats.

Adding Stratiolaelaps to the soil may account for up to 30% of thrips control. Stratiolaelaps do not control shore flies or moth flies, but will feed on other soil organisms, such as springtails and root mealybugs.

TARGET PEST: Fungus gnats (Bradysia spp.), Western flower thrips (Frankliniella occidentalis)

Release Rates

Apply 10-25/sq. ft. of soil media

Instructions for Use

Stratiolaelaps is supplied in a pasteurized peat/bran mixture with 15,000-20,000 predators per quart (liter), or about 15-20 predators per cc.

• The mixture may also may contain another species of mite as a food source for the predators.
• These biocontrol agents should be applied as soon as they are received. Do not refrigerate. Apply directly to moist, exposed areas of soil.
• If necessary, containers can be held, stored on their side out of direct sunlight, at 60-70°F (16-21°C) for up to 7 days.
• Shipped fresh, quality guaranteed. 

FOR YOUR FILES: Stratiolaelaps scimitus Tech Sheet (PDF)

Orders for Stratiolaelaps scimitus must be received by noon on Friday for shipment the following week.  If the deadline is past, please call us and we will help you find a solution ASAP. (360) 656-6680. If you would like two day shipping for this product, please contact us.  

See order deadlines and shipping information.

Learn about release instructions for beneficial insects.