While the Florida carpenter ant (Camponotus floridanus) is the most common associate with the endangered butterfly Cyclargus thomasi bethunebakeri, often known as the Miami blue butterfly, 16 other species of ants also tend the Miami blue caterpillars, such as Camponotus planatus, sometimes known as the compact carpenter ant, shown here. Geena M. Hill, a research biologist at the Florida Natural Areas Inventory at Florida State University, says she wants to test those other species to measure how effective each species is at promoting survival for the federally listed, critically endangered butterfly species. (Photo by Geena M. Hill)