Light-Trap Catches Of Spodoptera Exempta (Walk.) In Relation To Wind Direction

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Date
1971
Authors
Margaret J. H
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Abstract
Various, meteorological features of the atmosphere, which is the environment of the flying insect, greatly affect the distribution of insect Species both on the larger scale of long-range migration and on the smaller scale of variations in density at any given place (Johnson, 1969). The work of Williams (1940) appears Still to be the most comprehensive study of the effects of weather on the numbers of insects caught in a light-trap, these being considered by him as representative of the population present on any night. More recently, observations have been made at Muguga, near Nairobi, on the direction of flight of individual nocturnal insects in relation to wind (Brown, 1970), and investigations into the effects of rainfall and moon, light cycle on catches of adults of the noctuid Spodoptera exempta (Walk.) the African army worm, have been undertaken (Brown,1966 et seq.; Brown, Betts and Rainey, 1969).
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East African Agricultural And Forestry Journal, XXXVII (NO 2), p. 100-108