Galendromus occidentalis - FAQs

What is the western predatory mite?
It's the common name for Galendromus occidentalis, a predatory mite known for controlling spider mites in warm, dry conditions.

Does Galendromus work in hot, dry weather?
Yes. That's what sets it apart: it keeps controlling spider mites in drier, warmer conditions where many other predatory mites struggle.

Will it control russet mites?
Yes. Along with spider mites, it preys on russet mites (family Eriophyidae).

Can I use it on avocado trees?
Yes. It targets the persea mite, a spider mite that feeds on avocado leaves.

How can I tell Galendromus from the spider mites I'm treating?
Adults are pear-shaped and white until they feed, then take on their prey's yellow to pale-brown color. A hand lens makes them much easier to see.

Can I release it with other beneficial insects?
Yes, with parasitoid wasps and predators that don't eat mites, such as Aphidius, Encarsia and Mealybug Destroyers. We don't recommend releasing it in the same area as other predatory mites, since they compete with one another for the same prey.