Scale Insects In Kentucky

ENTFACT Supplement: Scale Insects In Kentucky

by Lee Townsend, Extension Entomologist
University of Kentuky College of Agriculture

Cottony Maple Scale (ENTFACT-427)
Host: maples, other woody plants
Appearance: flat, oval, brown, 1/8 inch long with large white cottony egg sac protruding from under body
Crawlers Active in Kentucky: June and July

Walnut Scale

ENTFACT-436: Walnut Scale  |  Download PDF

Tuliptree Scale

ENTFACT-435: Tuliptree Scale  |  Download PDF

Taxus Scales

ENTFACT-434: Taxus Scales  |  Download PDF

Oystershell Scale

ENTFACT-433: Oystershell Scale  |  Download PDF

by Lee Townsend, Extension Specialist
University of Kentucky College of Agriculture 

Oystershell scale is a common armored scale that can infest more than 100 plant species. Among the common hosts are lilac, ash, dogwood, maple, and willow. Males and females are about 1/10" inch long and resemble oyster shells. Their drab, bark-like appearance makes them easy to overlook, even on close inspection. Heavy infestations can kill twig or branches. 

Obscure Scale

ENTFACT-432: Obscure Scale  |  Download PDF

Magnolia Scale

ENTFACT-431: Magnolia Scale  |  Download PDF

Lecanium Scales

ENTFACT-430: Lecanium Scales  |  Download PDF

by Lee Townsend, Extension Specialist
University of Kentucky College of Agriculture 

Several species of soft scales, referred to as Lecanium scales feed on sap from shade trees and woody ornamentals. They are more or less hemispherical or turtle-shaped, brown, and range in size from 1/8 inch to 1/6 inch. While there are several very similar species, all have one generation a year and a general set of recommendations can be used to manage them. 

Juniper Scale

ENTFACT-429: Juniper Scale  |  Download PDF