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Broad mite (Polyphagotarsonemus latus) has a wide host range that includes peppers and tomatoes. When present, they are in and around plant buds; however, due to their small size, confirmation requires a microscope. Broad mite injects a toxin that causes leaves and stems around buds to become deformed (often curling downward) and hardened; fruit may appear scarred. Eggs are clear with characteristic rows of raised white bumps that give them a jeweled appearance. Broad mites are more common at cooler temperatures.

Broad mites.

(Photo: Ric Bessin, University of Kentucky)

Broad mite eggs.

(Photo: Ric Bessin, University of Kentucky)

Deformed, hardened plant tissue caused by broad mites.

(Photo: Ric Bessin, University of Kentucky)

Broad mite fruit injury to pepper.

(Photo: Brenda Kennedy, University of Kentucky)

Management:

• At the first signs of damage, use an approved miticide labelled for broad mites; apply as needed. Miticides that control spider mites are not necessarily effective against broad mites.

Biological control:

• The predatory mite (Amblyseius swirskii) has been shown to be an effective predator of broad mites. Using a miticide is not recommended if using predatory mites for biological control. A small predatory lady beetle species (Stethorus punctillum) can also be purchased for mite suppression.

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