cutworm


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cutworm,

name for the larvae of many moths of the family Noctuidae (owlet moths). These larvae, or caterpillars, feed at night on the stems and roots of young plants, often cutting them off near the surface of the ground. They hide in soil by day. They attack a wide variety of field crops in low-lying areas; an average cutworm feeding on corn consumes 65 sq in. (410 sq cm) of foliage during its development. Most species pupate (see insectinsect,
invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
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) underground. Many species overwinter in the pupal stage, the adults emerging in the spring and laying eggs from which the larvae hatch in summer. The number of generations occurring during the summer varies with the species and the climate. Cutworms are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Lepidoptera, family Noctuidae.
References in periodicals archive ?
In contrast, the head capsule of the tobacco cutworm has a white mark on it and its eighth abdominal segment has only two black dots.
Sub- lethal effects of Cry1F Bt corn and clothianidin on black cutworm (Lepidoptera: Noctuidae) larval development.
Influence of weather parameters on pheromone trap catches of potato cutworm, Spodoptera litura.
Cutworm larvae can crawl 60 feet (18 meters) or more in a night.
Abbreviations: CCW, common cutworm; CIM, composite interval mapping; cM, centimorgan; LG, linkage group; LOD, logarithm of odds; QTL, quantitative trait locus; RFLP, restriction fragment length polymorphism; SII, standardized insect-growth index; SSR, simple sequence repeat.
Finally, there are the army cutworm moths, which travel in teeming springtime flights hundreds of miles from prairies to Rocky Mountain peaks.
The lesser maple spanworm moth, the greater red dart, the ashen pinion (Lithophane antennata), the speckled green fruitworm moth (Orthosia hibisci), the maple looper moth (Parallelia bistriaris) and the variable oakleaf caterpillar moth (Lochmaeus manteo) affect forest hardwoods and orchard trees, whereas the ipsilon dart, the Boston dart (Euxoa bostoniensis), the variegated cutworm moth and the armyworm moth impact cultivated plant species.
At that time, I also examined rosette leaves for cutworm damage that occurred between experimental perforation and flowering.
Control: Cultivate to disturb the places they spend time during dry periods, use of insecticides and use of cutworm collars.Green peach aphidsThese aphids are usually light-green and soft-bodied.
The fall armyworm (FAW), which looks similar to the tobacco cutworm, but is a more serious threat, has recently caused large-scale damage in China, African, and South Asia.
Key words: Tobacco cutworm Spodoptera litura artificial diets parasitism Trichogramma chilonis INTRODUCTION