Obtuse Rove Beetle vs Japanese Water Penny
Side-by-side species comparison
| Attribute | Obtuse Rove Beetle | Japanese Water Penny |
|---|---|---|
| Scientific Name | Tachyporus obtusus | Eubrianax granicollis |
| Order | Coleoptera | Coleoptera |
| Family | Staphylinidae | Psephenidae |
| Size | 3-4 mm | 5-7 mm |
| Habitat | Grasslands | Forests |
| Diet | Predators | Omnivores |
| Regions | Europe, Western Asia | Japan, Taiwan |
| Conservation | Least Concern | Least Concern |
Obtuse Rove Beetle
A tiny, boat-shaped rove beetle with a yellow-brown pronotum and darker elytra. It is common in grasslands and meadows where it hunts among the grass tussocks for small invertebrates.
Did You Know?
This beetle overwinters in grass tussocks at field margins, emerging in spring to colonize crop fields where it provides early-season pest control.
Japanese Water Penny
An East Asian water penny beetle found in swift forest streams of Japan. Adults are dark and robust with a granular pronotum.
Did You Know?
Its larvae use a suction-cup-like ventral surface to maintain their grip on stones in powerful currents.