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Australian insectivorous bats are known to occupy and use resources in agroecosystems, yet little is known about their diets. We analysed a scat sample each from two individual bats, both threatened species (Chalinolobus picatus and Vespadelus baverstocki), in a major dryland cotton production zone. Both bats consumed economically important agricultural and cotton pests such as Helicoverpa sp. (bollworm). Our results suggest that these two bat species share around half of the insect prey resources available whilst consuming a wide range of prey items. This snapshot of dietary data provides further evidence that insectivorous bats consume a wide range of insect prey, including pests in cropping areas.