The Bohart Museum’s mission is to serve the research community, support campus teaching, provide science educational outreach for the public, and to provide diagnostic and information services. The museum houses the seventh largest insect collection in North America. The museum specializes in the unique insect fauna of California, both native and exotic species. Current holdings of nearly 8 million specimens include a wide range of terrestrial invertebrates, specializing in arthropods (insects, millipedes, centipedes, scorpions, mites, ticks, and spiders), crustaceans (pill and sow bugs, fairy and tadpole shrimp), and tardigrade water bears. The largest collections are of the Lepidoptera, Hymenoptera, Coleoptera, Acarina and Tardigrada. The collections are worldwide in scope, with the Americas, south Asia and Australia particularly well-represented. The museum is also the home of the California Insect Survey and sponsors research on the California fauna.