Long-Toed Water Beetle vs Horn-headed Rove Beetle
Side-by-side species comparison
| Attribute | Long-Toed Water Beetle | Horn-headed Rove Beetle |
|---|---|---|
| Scientific Name | Stenelmis crenata | Bledius tricornis |
| Order | Coleoptera | Coleoptera |
| Family | Elmidae | Staphylinidae |
| Size | 2-3.5 mm | 3-5 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Seed Feeders |
| Regions | North America | Europe, Central Asia |
| Conservation | Least Concern | Least Concern |
Long-Toed Water Beetle
A small riffle beetle with elongated tarsal claws for gripping rocks in fast currents. Both adults and larvae are entirely aquatic.
Did You Know?
Adults can live for several years underwater, far longer than most beetles.
Horn-headed Rove Beetle
A small rove beetle in which males bear three horn-like projections on the head, used in combat for burrow ownership. It is a specialist of sandy riparian habitats near rivers and lakes.
Did You Know?
Males with larger horns win more contests for burrow ownership, but hornless 'sneaker' males can also mate by entering burrows when the resident male is absent.