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Integrated Pest Management · Agriculture and Natural Resources

University of California


Greedy scale

Greedy scale (an armored scale).

Black scale

Black scale (a soft scale).

Sycamore scale

Sycamore scale.

Adult female scales and most immatures (nymphs) are immobile, wingless, and lack a separate head or other recognizable body parts. As a result, many people don't recognize them as insects. They feed by sucking juices from plants, which can lead to discoloration, dieback, distortion, and sooty mold growth on plants.  Two common groups of scale insects are armored scales and soft scales.

Scales (GENERAL)

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