ST. LOUIS, MO (KTVI) – One of the first insects to be put on the endangered species list is coming back. The beetle was last seen digging in Missouri mud back in the 1970′s. Now, 600 zoo-bred American burying beetles are being introduced to the Missouri prairie. They are being put into the Wah’ Kon-Tah Prairie in Southwest Missouri. The reintroduction of the beetles is a partnership project between the St. Louis Zoo, the Missouri Department of Conservation, The Nature Conservancy and the U.S. Fish and Wildlife Service.