Download white cutworm12/25/2023 ![]() ![]() The hind wings are usually solid in color and lighter than the front wings. The 1-1/2 to 2-inch moths are dull-gray to brown with yellow, gray, light brown, and black designs on the front wings. These night-flying moths are frequently attracted to lights at night. Serious losses are often associated with wet springs that have caused a delay in planting.Ĭutworms are the larvae of moths. Corn can be seriously damaged by cutworms from planting through mid-June while the plants are less than 18 inches tall. While they are potentially very destructive, cutworms are unpredictable, and the chances of significant damage in any given year are relatively low. Larger stages of cutworms cut entirely through the plant or tunnel into the plants below or above the soil line, whereas small-stage cutworms climb plants and chew small holes in the leaves. They often go unnoticed until after a significant number of plants have been damaged. University of Kentucky College of AgricultureĬutworms are sporadic early-season pests that can reduce plant populations in a field. Oceologia (Berlin) 74:524–530.ENT-59: Cutworm Management in Corn | Download PDF by Ric Bessin, Extension Entomologist Ecology of a bolas spider, Mastophora hutchinsoni: Phenology, hunting tactics, and evidence for aggressive chemical mimicry. Chemical mimicry: Bolas spiders emit components of moth prey species sex pheromones. Stowe, M.K., Tumlinson, J.H., and Heath, R.R. Structure-activity relationships in sex attractants for North American noctuid moths. Steck, W., Underhill, E.W., and Chisholm, M.D. Mass-rearing of the larvae of nine noctuid species on a simple artificial medium. An annotated bibliography of the bristly cutworm, Lacinipolia renigera-Stephens). The seasonal history and economic importance of more common and destructive species. Interpopulational variation in emitted pheromone blend of cabbage looper moth, Trichoplusia ni. Determination of double bond position in mono-unsaturated acetates by mass spectrometry of dimethyl disulfide adducts. A highefficiency collection device for quantifying sex pheromone volatilized from female glands and synthetic sources. International Organization for Biological Control-West Palearctic Regional Section, Paris.īaker, T.C., Gaston, L.K., Pope, M.M., Kuenen, L.P.S., and Vetter, R.S. List of Sex Pheromones of Lepidoptera and Related Attractants. ![]()
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