The silverleaf whitefly (SL W), Bemisia tabaci B-biotype, was first discovered in Australia in 1994. SLW is a major pest of cotton in many overseas countries and poses a considerable threat to cotton in Australia. Consequently a monitoring system using surveys has been run over the past two years to: * Monitor the distribution and abundance of the whitefly, * Record its hosts, and * Assess the degree of natural biological control provided by indigenous parasitoid