San Jose scale (Quadraspidiotus perniciosus). Click on image
to enlarge. San Jose Scale

Scientific name: Quadraspidiotus perniciosus (Comstock)
(Homoptera: Diaspididae)

Facts: San Jose scales are very tiny insects covered with small gray or brownish-gray waxy scales about 1/10 inch across, each with a raised spot in the center. They are found on twigs and fruit. Twigs covered with their gray coating have the appearance of ashes.

Photo credit:    Extension Entomology, Texas A&M University


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Last modified:  August 10, 2001 by John A. Jackman