Silvery Blue vs Narrow-Necked Cave Beetle
Side-by-side species comparison
| Attribute | Silvery Blue | Narrow-Necked Cave Beetle |
|---|---|---|
| Scientific Name | Glaucopsyche lygdamus | Leptodirus hochenwartii |
| Order | Lepidoptera | Coleoptera |
| Family | Lycaenidae | Leiodidae |
| Size | 22-30 mm wingspan | 8-10 mm |
| Habitat | Meadows | Caves |
| Diet | Omnivores | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Vulnerable |
Silvery Blue
A small silvery-blue butterfly with a neat row of round black spots ringed in white on the grey underside. It is one of the first blue butterflies to emerge in spring.
Did You Know?
The larvae are frequently attended by ants, which protect them in exchange for sugary honeydew secretions.
Narrow-Necked Cave Beetle
The first cave-dwelling animal ever scientifically described, in 1832. Completely eyeless and unpigmented, with an elongated neck-like pronotum adapted to cave life.
Did You Know?
Described in 1832, this was the first troglobite ever known to science — its discovery launched the entire field of cave biology and biospeleology.