Quadraspidiotus perniciosus

Quadraspidiotus perniciosus

San Jose Scale
Binomial:Quadraspidiotus perniciosus
Order: Hemiptera
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