Andrena clarkella (Clarke's Mining-bee)
Females average somewhat larger than a Honey Bee and are very furry
with a reddish-brown pile on the thorax and sometimes the base of the abdomen, and a dense black pile on the abdomen. The hind tibiae and their pollen brushes are orange.

Males are brownish-haired with a strip of black hairs alongside the inner eye margins. Their hind tibiae are also orange, which is unusual for male mining bees, and the tergites are dulled microsculpture.

This is a widespread and locally common bee that can fly from late February to May, peaking with the pussy willow catkins in late March and April. It uses a variety of habitats and soil types and form large nesting aggregations. It is attacked by the cleptoparasitc bee Nomada leucophthalma.

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