Pale Arctic Clouded Yellow vs Two-coloured Mason Bee

Side-by-side species comparison

Attribute Pale Arctic Clouded Yellow Two-coloured Mason Bee
Scientific Name Colias werdandi Osmia bicolor
Order Lepidoptera Hymenoptera
Family Pieridae Megachilidae
Size 38-46 mm wingspan 8-11 mm
Habitat Mountains Grasslands
Diet Nectar Feeders Nectar Feeders
Regions Northern Scandinavia, Finnish Lapland, Kola Peninsula Europe
Conservation Least Concern Least Concern

Pale Arctic Clouded Yellow

A pale greenish-yellow butterfly with very faint dark wing borders. It is closely associated with Scandinavian mountain habitats. The underside is pale with a small orange-ringed discal spot.

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Did You Know?

This butterfly is endemic to the Scandinavian mountains and is not found anywhere else in the world.

Two-coloured Mason Bee

A distinctive bee with a black head and thorax and bright orange abdominal hair. It uniquely nests inside empty snail shells on chalk grasslands.

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Did You Know?

After filling a snail shell with pollen and eggs, the female camouflages it by piling grass and plant stems over it.