description Osmia aurulenta Overview
Osmia aurulenta is a solitary mason bee species widespread across Europe, easily recognized by its distinctive nesting behavior. Unlike other bees that dig burrows or use plant stems, females of this species exclusively build their nests inside the empty shells of terrestrial snails. The bee partitions the shell into individual brood cells using chewed plant material and mud, providing each egg with a supply of pollen and nectar. They are typically found in dry, sunny environments like sand dunes and chalk grasslands where snail shells are abundant.
help Osmia aurulenta FAQ
Where does Osmia aurulenta nest?
Osmia aurulenta is a solitary mason bee that nests inside empty shells of terrestrial snails. This shell-nesting behavior is its most distinctive feature.
Does Osmia aurulenta live in a hive?
No. Each female builds and provisions her own nest, so the species does not form a honeybee-style colony with a queen and workers.
How does Osmia aurulenta use a snail shell?
The female places pollen and eggs inside an empty land-snail shell, then seals the entrance with materials such as plant fragments and mud. The shell provides a ready-made protective nest cavity.
Where is Osmia aurulenta found?
It is widespread across Europe, especially in habitats where suitable empty snail shells and flowering plants are available. Its local abundance depends on nesting sites, forage, and habitat conditions.
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