Water Scavenger Beetle vs Grain Aphid
Side-by-side species comparison
| Attribute | Water Scavenger Beetle | Grain Aphid |
|---|---|---|
| Scientific Name | Hydrophilus piceus | Sitobion avenae |
| Order | Coleoptera | Hemiptera |
| Family | Hydrophilidae | Aphididae |
| Size | 34-48 mm | 1.5-3 mm |
| Habitat | Ponds & Lakes | Farmland |
| Diet | Herbivores | Herbivores |
| Regions | Europe, Asia | Europe, Asia, Africa, South America |
| Conservation | Near Threatened | Not Evaluated |
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.
Grain Aphid
A major pest of cereal crops in Europe and other temperate regions. It feeds on ears and leaves, reducing grain quality and transmitting barley yellow dwarf virus.
Did You Know?
Feeding on wheat ears during grain fill can reduce thousand-kernel weight by up to 20%.