Large Elm Beetle vs Japanese Burrowing Mayfly
Side-by-side species comparison
| Attribute | Large Elm Beetle | Japanese Burrowing Mayfly |
|---|---|---|
| Scientific Name | Oulimnius tuberculatus | Ephemera japonica |
| Order | Coleoptera | Ephemeroptera |
| Family | Elmidae | Ephemeridae |
| Size | 2-3 mm | 15-25 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Japan, East Asia |
| Conservation | Least Concern | Least Concern |
Large Elm Beetle
A small, robust riffle beetle found throughout European streams. Adults have a distinctive tuberculate surface texture on their elytra.
Did You Know?
It is widely used as a bioindicator of good water quality in European river assessments.
Japanese Burrowing Mayfly
A large burrowing mayfly native to Japanese rivers and streams. It emerges in large numbers during early summer evenings.
Did You Know?
It is culturally significant in Japan, where mayfly emergence has been celebrated in poetry for centuries.