Quadraspidiotus perniciosus

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Quadraspidiotus perniciosus

San Jose Scale
Binomial: Quadraspidiotus perniciosus
Order: Hemiptera
Metamorphosis: Simple
Damaging stages: Nymphs
Vulnerable stages: Crawler

San Jose scale is a pest of both orchards and ornamental plants. The insect is originally from China, but introduced in North America in the late 1900s as an invasive species.

Description[edit]

Circular hard scales, generally in great numbers. Adult males are winged, females remain under the scale.

Symptoms and Signs[edit]

Severe infestations can kill the host plant if not treated.

Host plants[edit]

Control[edit]

References[edit]