Seasonal Trends in Catches of Moths of the Tobacco Hornworm,1 Tomato Hornworm,1 and Corn Earworm2 in Traps Equipped with Blacklight Lamps in North Carolina3
Authors: STEWART, PAUL A.; GENTRY, CECIL R.; KNOTT, CRAWFORD M.; LAM, JR., JESSE J.
Source: Journal of Economic Entomology, Volume 61, Number 1, February 1968 , pp. 43-46(4)
Publisher: Entomological Society of America
Abstract:Catches in traps equipped with blacklight lamps provided data for the construction of curves showing seasonal trends in the populations of moths of the tobacco hornworm, Manduca sexta (Johannson); tomato horn- worm, M. quinquemaculata (Haworth); and corn earworm, Heliothis zea (Boddie).
Both species ofManduca generally had 3 peaks of populations, the first sometime between mid-May and late June, the second from mid-July until late August, and the third in early or mid-September. The second peak was usually, but not always, much higher than the first, and the third was usually lowest. Populations were always low the first 2 weeks of July. Major changes in levels were abrupt and marked between successive weeks. In some years, relatively high levels were maintained as long as 6 weeks; in other years, they were maintained only 1 or 2 weeks. The catch of males was usually, but not always, higher than that of females. Seasonal curves for the 2 species of Manduca were generally similar.
The population of H. zea was low until mid-August, when an abrupt increase resulted in the season's peak. Decline started the first week after the peak was reached and generally continued until the end of the trapping season. Minor increases sometimes occurred in late September.
Document Type: Research Article
Publication date: February 1, 1968
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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