Field Identification
Flat, dark tetranychid mite that feeds on the upper leaf surface of citrus and some ornamentals, causing a fine silvery speckle and, in heavy infestations, leaf drop. Often peaks in warm, dry spells.
Adults appear almost squarish and dark brown to olive under magnification; webbing is sparse compared to two-spotted spider mite. Nymphs cluster along midribs and veins.
How to Deal With It
Organic Control Methods
Horticultural or narrow-range oils applied with thorough coverage; soap sprays for low populations on backyard trees.
Predatory mites in the Phytoseiidae family and minute pirate bugs—conserve by delaying sprays until monitoring shows rising ratios of pest to predator.
Reduce dust; avoid nitrogen flushes that prolong tender leaf availability; do not alternate unrelated miticides that harm beneficials without cause.
Water rinse of foliage on small specimens can lower numbers short term.
Regular scouting on interior canopy leaves where mites colonize first.
Let Nature Handle It
Natural Enemies
- Euseius spp.
- Minute Pirate Bugs
- Predatory Mites
Threat Map