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Trap-oriented behaviour of red-banded blister beetles, Mylabris designata var. hacolyssa Rochebrune (Coleoptera: Meloidae), in the Sudan
Published online by Cambridge University Press: 10 July 2009
Abstract
Mylabris designata var. hacolyssa Rochebrune is a pest of a variety of crops, particularly okra, in the central and western provinces of the Sudan. A study is reported of the responses of the beetle to visually attractive traps which were used to measure daily and seasonal flight activity. Blue-coloured traps were more attractive than red, lavender, white or black traps. The catching efficiencies of Manitoba traps and sticky targets were recorded by direct observation: 43·3% of approaching beetles were captured by a blue Manitoba trap whereas the initial 50–80% efficiency of blue sticky targets decreased to 10–20% over three days due to an increasing close range olfactory repellent effect on the beetles. The potential for the use of such traps as a cheap and environmentally acceptable alternative to the use of insecticides for control of M. d. hacolyssa is discussed.
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