Leaf Beetle
Solomon, J.D.; Leininger, T.D.; Wilson, A.D.; Anderson, R.L.; Thompson, L.C.; McCracken, F.I. 1993. Ash pests: A guide to major insects, diseases, air pollution injury and chemical injury. Gen. Tech. Rep. SO-96. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 45 p.
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Pest. - Leaf beetle, Octotoma plicatula (Fab.); a black, wedge-shaped beetle 4 to 5 mm long, with a distinctive, irregular design of ridges on its wing covers; adults are active from early May through August.
Injury. - Long, narrow patches of epidermis about 2 mm wide and 4 to 10 mm long are eaten from the undersides of leaves. Heavily damage leaves turn brown and drop prematurely in late summer.
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Damage; feeding injury
James Solomon, USDA Forest Service |
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