Hypoaspis (Stratiolaelaps scimitus Womersley)

Target Pests: Fungus gnats (Bradysia spp.), Western flower thrips (Frankliniella occidentalis), Root Aphids, Mites

Description: Stratiolaelaps (Hypoaspis) is a native species of soil-dwelling mite, which feeds on small insects and mites (e.g. springtails, root mealybug crawlers, and spider mites). Adults are tan in color, less than 1 mm long (1/20th in.) and move rapidly over the soil surface. They live, eat, and reproduce in the soil medium and walkways on the greenhouse floor.

Use in Biological Control: Stratiolaelaps are used primarily to control young larvae of fungus gnats in the soil or planting media. They also help control soil stages of thrips and may account for up to 30% of thrips control. They do not control shore flies or moth flies, but will feed on other soil organisms, such as springtails and root mealybugs. They have been used successfully in bedding and potted plant production, seedling and cutting propagation, and poinsettia stock. Stratiolaelaps adapt well to the various growth media and capillary mats used in plant production, but do not survive freezing or flooding conditions.

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Application Rate

25,000 each per 1,000 - 2,000 square feet

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