Marsh Treader vs Water Scavenger Beetle
Side-by-side species comparison
| Attribute | Marsh Treader | Water Scavenger Beetle |
|---|---|---|
| Scientific Name | Hydrometra stagnorum | Hydrophilus piceus |
| Order | Hemiptera | Coleoptera |
| Family | Hydrometridae | Hydrophilidae |
| Size | 9-12 mm | 34-48 mm |
| Habitat | Ponds & Lakes | Ponds & Lakes |
| Diet | Herbivores | Herbivores |
| Regions | Europe, Western Asia | Europe, Asia |
| Conservation | Least Concern | Near Threatened |
Marsh Treader
An extremely slender, stick-like bug with a greatly elongated head. It walks slowly across floating vegetation and water surfaces at pond margins, probing for tiny prey.
Did You Know?
Its elongated head and rostrum give it a bizarre twig-like appearance, providing excellent camouflage among vegetation.
Water Scavenger Beetle
One of the largest European water beetles, with a glossy black, boat-shaped body. Despite its name, it is largely herbivorous as an adult.
Did You Know?
It carries air under its body in a silvery film, giving it a shimmering appearance underwater.