Yellow-Margined Water Scavenger Beetle vs Water Measurer
Side-by-side species comparison
| Attribute | Yellow-Margined Water Scavenger Beetle | Water Measurer |
|---|---|---|
| Scientific Name | Hydrochara caraboides | Hydrometra australis |
| Order | Coleoptera | Hemiptera |
| Family | Hydrophilidae | Hydrometridae |
| Size | 14-18 mm | 8-11 mm |
| Habitat | Ponds & Lakes | Ponds & Lakes |
| Diet | Scavengers | Omnivores |
| Regions | Europe, Western Asia | Americas, from southern United States to South America |
| Conservation | Near Threatened | Least Concern |
Yellow-Margined Water Scavenger Beetle
A large dark water scavenger beetle with yellowish margins on the pronotum. It inhabits well-vegetated ponds and is declining in parts of northern Europe.
Did You Know?
Larvae are fierce predators that dispatch prey much larger than themselves, including tadpoles.
Water Measurer
A very slender, elongate semi-aquatic bug that walks slowly on water surfaces in the Americas. Its head is exceptionally long and narrow with a small rostrum at the tip. It moves with slow, deliberate steps along pond margins.
Did You Know?
It is so lightweight that it can walk on the water surface without breaking the surface tension, leaving no visible dimples where its feet contact the water.