The apple dimpling bug (ADB), Campylomma liebknechti (Girault) is a sucking insect, indigenous to Australia which occurs in all cotton growing area. Bishop (1980) and Chinajariyawong and Water (1990)reported that ADB is a pest as well as a predator of Heliothis eggs in cotton. ADB is also considered a predator of two spotted mites in cotton (Wilson et al. 1998). Currently there are mixed conceptions within the cotton industry about the status of ADB; whether it is a pest or a beneficial insect. Some growers and consultants consider ADB as a pest in the same category as the green mirid and recommend insecticide sprays against it if numbers are over the current entomoLOGIC threshold. Some growers and consultants do not classify ADB as a pest or as a beneficial insect, but will control it with synthetic insecticides if populations are high, plants are being tipped out or pin squares are being lost and other pests like green Thirds or thrips are absent. Thus the cotton industry's mixed attitude towards ADB, in contrast to the green mirids, shows there is a substantial gap in our knowledge of the true status of this insect. Detailed study of the basic biology, behaviour, pest status and population dynamics of ADB is required so that appropriate control measures can be identified to manage them. In this paper we present some of the results of our recent research on ADB, particularly some aspects of the pest status, lifecycle, sampling and diurnal activities. In addition, we will report on the different species of apple dimpling bug found in the cotton growing areas in NSW