Your browser does not support JavaScript!
Purdue Extension 4-H/FFA Career Development Event (CDE) | FFA | Purdue | entomology | CDE | insect | insect orders | flashcards | contest
insect imagespacer
Oystershell Scale
(Extension, Purdue University)
spacer
Common Name: Oystershell Scale

Order: Homoptera

Family: Diaspididae


Pest Status: Oystershell scales can damage many species of trees and shrubs as the insects colonize them and begin sucking out plant juices.

Appearance: Adults are about 1/8-inch long, gray-brown, and noticeably convex, resembling miniature oyster shells.

Life Cycle: The females lay their eggs in the late fall and the eggs overwinter. Hatching occurs in the late spring and the crawlers move around for a few hours before settling. The scales are white in color at first, but become brown with maturity. They mature in mid-summer, mate, and lay eggs. The second generation develops by late fall.

Where to Collect: These scales develop on the bark of host plants. Searching plants for the scale shells is a good way to find and mount these insects.

Purdue Extension Entomology, 901 West State Street, West Lafayette, IN 47907 USA, (765) 494-4554

Department of Entomology | College of Agriculture | Extension

© Purdue University | An equal access/equal opportunity university | Integrity Statement | Copyright Complaints | Maintained by ENTM IT

Trouble with this page? Disability-related accessibility issue? Please contact us at entmwebmaster@purdue.edu so we can help.