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Pest Alert Elongate Hemlock Scale NA-PR-01-02

Pest Alert -The elongate hemlock scale, Fiorinia externa Ferris, native to Japan, is a pest of eastern hemlock, Tsuga canadensis, and Carolina hemlock, T. caroliniana, in the Eastern United States. It has been found in the District of Columbia and in nine states from Virginia to southern New England and west to Ohio. F. externa attacks the lower surface of the hemlock needle, where it removes fluids from the mesophyll cells through piercing and sucking mouthparts.

PDF Download: Year of Publication:
2002
ID: 
NA-PR-01-02
Author: 
McClure, Mark S.
Availability: 
Online
Topic:
Insects and Diseases
Pest Alert Elongate Hemlock Scale NA-PR-01-02
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https://www.fs.usda.gov/naspf/publications/pest-alert-elongate-hemlock-scale-na-pr-01-02