Korean Water Scorpion vs Round-bodied Scydmaenine
Side-by-side species comparison
| Attribute | Korean Water Scorpion | Round-bodied Scydmaenine |
|---|---|---|
| Scientific Name | Laccotrephes japonensis | Scydmaenus tarsatus |
| Order | Hemiptera | Coleoptera |
| Family | Nepidae | Staphylinidae |
| Size | 30-38 mm | 1-2 mm |
| Habitat | Ponds & Lakes | Forests |
| Diet | Predators | Predators |
| Regions | East Asia, Japan/Korea | Europe |
| Conservation | Least Concern | Least Concern |
Korean Water Scorpion
A flat, leaf-shaped aquatic predator found in Japan and Korea. Despite its name, it is not a true scorpion but a true bug with raptorial forelegs. Breathes through a siphon-like tail appendage.
Did You Know?
The long breathing siphon at the rear works like a snorkel, allowing the water scorpion to breathe while remaining submerged and hidden among leaf litter.
Round-bodied Scydmaenine
A minute, convex rove beetle of the subfamily Scydmaeninae with a distinctively constricted waist between thorax and abdomen. It is a specialized predator of armored mites in forest soil.
Did You Know?
This tiny beetle has evolved specialized mandibles that can crack open the heavily armored shells of oribatid mites, prey that most other predators cannot exploit.