Passalid Beetle vs Lesser Silver Water Beetle
Side-by-side species comparison
| Attribute | Passalid Beetle | Lesser Silver Water Beetle |
|---|---|---|
| Scientific Name | Pharochilus dilatatus | Hydrochara flavipes |
| Order | Coleoptera | Coleoptera |
| Family | Passalidae | Hydrophilidae |
| Size | 25-35 mm | 12-16 mm |
| Habitat | Forests | Ponds & Lakes |
| Diet | Wood Feeders | Scavengers |
| Regions | Australia | East Asia |
| Conservation | Least Concern | Least Concern |
Passalid Beetle
A large, glossy black beetle that lives in family groups inside rotting logs. Adults and larvae communicate using squeaking sounds produced by rubbing body parts together.
Did You Know?
Parents chew wood into pulp to feed their young, making them one of few beetles with true parental care.
Lesser Silver Water Beetle
A medium-sized water scavenger beetle found in still waters across East Asia. Its legs have distinctive yellowish tarsi.
Did You Know?
It is commonly encountered in rice paddies where it helps break down organic matter in the flooded fields.