College of Agricultural, Human, and Natural Resource Sciences

Department of Entomology

Juniper Scale

Insects &

Black Widow Spider
Blister Beetle
Box Elder Bug
Cat Face Spider
Cat Flea
Cereal Aphid
Cereal Leaf Beetle
Corn Earworm
Crab Lice
Cooley Spruce Gall Adelgid
False Wire Worm
European Mantis
Jumping Spider
Juniper Scale
Locust Borer
Minute Pirate Bug
Mosquito Diseases
Northern Scorpion
Rose Curculio
Russian Wheat Aphid
Snowball Aphid
Ten Lined June Beetle
Western Yellow Striped Army Worm
Wheat Stem Sawfly
Wire Worm
Wooley ash aphid
Yellow Jacket Wasp
Yellow Sac Spider


Carulapsis juniperi

Juniper scales have white oval females with a distinct yellow spot in the center. (See photo) The males are elongated. All plant parts are attacked, but scales feeding on the leaves and leaf stems are noticeable. Loss of vigor and ultimately plant death can occur. Honeydew produces will result in sooty mold on the shrubs.

Treatment of heavily infested shrubs should take place in late spring to early Summer when the immature crawler stage is present. They resemble tiny aphids. The crawlers molt into mature scales which are harder to manage.The adult females produce eggs within Their body and over winter filled with eggs. Oil sprays in early spring are effective but may burn the foliage.

Department of Entomology, Washington State University, Pullman, WA, 99164-6382 USA, 509-335-5422, Contact Us
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