Trechine Cave Ground Beetle vs Beautiful Demoiselle
Side-by-side species comparison
| Attribute | Trechine Cave Ground Beetle | Beautiful Demoiselle |
|---|---|---|
| Scientific Name | Aphaenops cerberus | Calopteryx virgo |
| Order | Coleoptera | Odonata |
| Family | Carabidae | Calopterygidae |
| Size | 6-9 mm | 50-55 mm wingspan |
| Habitat | Caves | Rivers & Streams |
| Diet | Predators | Predators |
| Regions | French Pyrenees (Ariège, Haute-Garonne) | Europe, Asia |
| Conservation | Vulnerable | Least Concern |
Trechine Cave Ground Beetle
A fully cave-adapted ground beetle from the Pyrenees with no eyes, no pigmentation, and extremely elongated spider-like legs and antennae. It is beautifully adapted to life in total darkness.
Did You Know?
Named after Cerberus, the three-headed guard dog of the underworld, this beetle navigates pitch-dark caves using enormously elongated antennae that can be twice its body length.
Beautiful Demoiselle
A stunning damselfly with entirely dark-tinted wings in males and bronze-green wings in females. It prefers faster-flowing, well-oxygenated streams.
Did You Know?
Beautiful demoiselles are indicators of clean water quality, as their larvae can only survive in well-oxygenated, unpolluted streams.