American Sand Mayfly vs Jokisch's Ground Beetle
Side-by-side species comparison
| Attribute | American Sand Mayfly | Jokisch's Ground Beetle |
|---|---|---|
| Scientific Name | Dolania americana | Nebria jokischii |
| Order | Ephemeroptera | Coleoptera |
| Family | Behningiidae | Carabidae |
| Size | 10-15 mm body | 11-15 mm |
| Habitat | Rivers & Streams | Mountains |
| Diet | Omnivores | Omnivores |
| Regions | North America | Central Alps, Austria, Switzerland |
| Conservation | Least Concern | Least Concern |
American Sand Mayfly
Holds the record for the shortest adult lifespan of any insect — females live less than five minutes as adults, just long enough to mate and lay eggs before dying.
Did You Know?
Female Dolania americana mayflies live less than five minutes as adults — they emerge, mate, lay eggs, and die faster than most people take a coffee break.
Jokisch's Ground Beetle
A high-altitude ground beetle found near permanent snow patches in the Alps. It is adapted to cold, wet conditions on rocky terrain.
Did You Know?
It completes its entire life cycle in the brief alpine summer of just a few months.