Spring Cankerworm
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. - Spring cankerworm, Paleacrita vernata (Peck); caterpillars are typical loopers; brown to black with yellow stripe; occur in the Eastern United States and southern Canada; 25 to 48 mm long; produce one generation per year.
Injury. - In the spring, young larvae eat holes in the leaves; later the whole leaf is eaten except for the midrib and major veins; defoliation stresses the trees.
Prevention and Control. - Sticky bands around tree trunks will trap the wingless females; chemical or biological controls are occasionally needed.
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Adult(s)
Jerald E. Dewey, USDA Forest Service |
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