Lutrochidae is a family of water beetles sometimes known as "travertine beetles", since in North America they are common in springs and streams depositing travertine. They are distinguished by their ovate bodies, 2-6 mm long and yellowish in color, and short antennae in which the first two antennomeres are longer than the others. The larvae are elongate, 4-10 mm in length, with short but well-developed legs. Both adults and larvae are found in fast-moving water, feeding on algae and wood.