The Passalids are shiny black beetles that have a curved antenna. They live in rotten logs, leaving only to form new colonies and show a level of social structure. Adults can make a sound by rubbing their hind wing against the end of their abdomen. The larvae can also make a sound by rubbing their modified and stumpy back leg against their middle leg. These beetles also support a wide diversity of other organisms such as mites, fungi and nematodes. Only one species, Pharochilus politus, is known from Tasmania.
Late October 2010
Images by Elizabeth Daley, used with permission.