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Cuckoo wasp, close-up photo. This specimen (species unknown) was found in Timpanogos Cave National Monument, Utah, USA. Cuckoo wasps (Chrysididae family) are highly coloured and are so named for their habit of laying eggs in other wasp species nests. Photographed by the USGS Bee Inventory and Monitoring Lab: an organisation dedicated to identifying, cataloguing and monitoring bees and other insect species. (KEYSTONE/SCIENCE PHOTO LIBRARY/US GEOLOGICAL SURVEY/SCIENCE PHOTO LIBRARY)