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Article: Calico scale.(PEST OF THE MONTH)
- Article from:
- Arbor Age
- Article date:
- October 1, 2007
CopyrightCOPYRIGHT 2007 Adams Business Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Calico scale, Eulecanium cerasorum (Cockerell) is believed to have been introduced into the San Francisco area in the early 1900s and eventually spread throughout the United States.
What does it look like?
Calico scale is about 1/4 inch in diameter, and is white and dark brown. It is brightest at maturity and darkens with age. The first instar nymphs are pinkish in color becoming yellowish as they enlarge. Throughout the winter, the immature females are oval, flattened, and light to dark brown with a hard, waxy coating.
Host material and range
Calico scale's host range includes dogwood, honeylocust, magnolia, maple, sweetgum, tuliptree ...