Abstract
A record is provided of 23 arthropod species inhabiting the ground strata of cotton fields in south-eastern Queensland. The Coleoptera were the most diverse group (14 species) and Labidura riparia truncata Kirby, and Nala lividipes (Dufour) (both Labiduridae : Dermaptera) were the most abundant species caught in pitfall traps. Changes in the ecosystem in response to different pest control strategies were considered; broad-spectrum insecticide use resulted in the suppression of most species. Resurgence of L. riparia was evident in fields treated with DDT-toxaphene. Possible resurgence of four other species was observed after the removal of insecticide pressure. Several of these species may be of importance because of their predatory function.
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