description Andrena clarkella Overview
Andrena clarkella is an early-spring mining bee found across Europe and North America. It is a specialist pollinator, foraging primarily on willow blossoms for nectar and pollen. The bee nests in the ground, often in sandy soils, and is active from March to May.
help Andrena clarkella FAQ
When can Andrena clarkella be seen flying?
It is one of the earliest mining bees, typically active from March into early June in Britain and Ireland. Its flight peak closely follows the appearance of willow catkins in April.
Does Andrena clarkella collect pollen only from willow?
Females specialize strongly in willow pollen and are most often seen working Salix catkins. They may visit plants such as dandelions for nectar, so "willow specialist" does not mean every feeding visit is restricted to one genus.
Where does Clarke's mining bee build its nest?
A female excavates a burrow in bare or lightly vegetated soil, often near woodland, willow stands, or the base of trees. Although each female owns her nest, several may form a loose nesting aggregation.
Which bee is most easily confused with Andrena clarkella?
Early-flying Andrena species such as Gwynne's mining bee, Andrena bicolor, can cause confusion at a glance. Andrena clarkella females are relatively large, with reddish hind legs and pale facial hair, but close photographs may be needed for a reliable identification.
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