Black Arches vs Glandon Blue
Side-by-side species comparison
| Attribute | Black Arches | Glandon Blue |
|---|---|---|
| Scientific Name | Lymantria monacha | Agriades glandon |
| Order | Lepidoptera | Lepidoptera |
| Family | Erebidae | Lycaenidae |
| Size | 40-55 mm wingspan | 20-26 mm wingspan |
| Habitat | Forests | Mountains |
| Diet | Omnivores | Nectar Feeders |
| Regions | Europe, temperate Asia, Japan | Alps, Pyrenees, Rocky Mountains |
| Conservation | Least Concern | Least Concern |
Black Arches
A striking moth with white wings boldly marked with black zigzag lines and a pink-flushed abdomen. It can occasionally erupt in huge outbreaks that defoliate conifer forests.
Did You Know?
During outbreaks in central Europe, caterpillar frass falling from trees sounds like rainfall.
Glandon Blue
A tiny high-altitude blue butterfly with distinctive underside spotting. It flies close to the ground in exposed alpine habitats.
Did You Know?
It has been recorded flying at over 3600 meters in the Alps.