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The Hooded Beetle: A Predator of the Tobacco Budworm

Gloria S. McCutcheon, Deborah M. Webster


The hooded beetle, Notoxus spp., was tested in laboratory cages to determine its consumption rate of tobacco budworm eggs at four densities (5, 10, 15, and 20 eggs) and three 24-hr intervals. Consumption rate was highest during the first 24 hours after starvation and reached 87.4% after 72 hours. There were no significant differences among the egg density groups within each time interval. While there are no reports of larval consumption by the hooded beetle, consumption rate of tobacco budworm larvae was determined. A comparison of egg and larval consumption resulted in no significant differences between the percent consumption of eggs and larvae in 30 ml cups. More eggs than larvae were consumed in the larger cages (12 cm x 14 cm). The hooded beetle consumed eggs at a lower rate than the bigeyed bug, Geocoris punctipes, at all densities after 48 hr.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pp. 796 - 798
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998