Featherwing beetles

The smallest known beetle in the world can be found amongst fallen leaves in the Copeland Ravine. Named for their fringed hind-wings, the featherwing beetle (Ptillidae) can be as tiny as 0.3 mm, the same size as a grain of sand. At this small size, the air is too viscous to fly with average, membranous wings. It would be analogous to humans trying to walk in water. Instead, the featherwing beetle passively floats in the air in the same way that dandelion seeds drift.