Predaceous diving beetle

Freshwater ponds, lakes, marshes, and slow-moving streams; adults may fly between water bodies and enter lights or buildings.

Adults and larvae are aquatic predators that eat insects, crustaceans, tadpoles, small fish, and other aquatic animals.

Adults swim using flattened, fringed hind legs and carry an air supply beneath their wing covers. They are strong fliers, often nocturnal, and larvae undergo complete metamorphosis.

Harmless to property and beneficial predators in freshwater ecosystems. They can deliver a painful defensive bite if handled, but are not venomous.