Giant Black Water Beetle vs Swift Rove Beetle
Side-by-side species comparison
| Attribute | Giant Black Water Beetle | Swift Rove Beetle |
|---|---|---|
| Scientific Name | Hydrophilus triangularis | Tachyporus hypnorum |
| Order | Coleoptera | Coleoptera |
| Family | Hydrophilidae | Staphylinidae |
| Size | 34-40 mm | 3-4 mm |
| Habitat | Ponds & Lakes | Farmland |
| Diet | Predators | Predators |
| Regions | North America | Europe, North Asia, introduced to North America |
| Conservation | Least Concern | Least Concern |
Giant Black Water Beetle
The largest water beetle in North America, with a shiny black oval body. Larvae are voracious predators while adults are mainly plant feeders.
Did You Know?
It carries a bubble of air beneath its body like a silvery film, which it replenishes at the surface.
Swift Rove Beetle
A small, streamlined rove beetle of the subfamily Tachyporinae with a tapered posterior and bicolored body. It is extremely abundant in agricultural fields and an important predator of cereal aphids.
Did You Know?
Despite their tiny size, Tachyporus beetles can consume more aphids per day than many larger predatory beetles, making them key biocontrol agents.