Andrena bicolor

Andrena bicolor

Description

This is a small solitary mining bee. The females are about 9 to 11 mm, and the males are slightly smaller. Females have back hairs on the face, gingery hairs on the top of the thorax and at the front of each side - the remainder has black hairs. The abdomen is black but with pale brown hairs forming bands across the base of each segment. The legs are mostly black with an orange-brown pollen brush on the hind legs. Males are similar but slimmer and lack the pollen brush.

Identification difficulty

females, males

Recording advice

Good quality images are required showing the key ID features and should include a side image. Note that most solitary bees and wasps are challenging to identify and are seldom identifiable from photographs taken in the field. NatureSpot will accept records identified by a recognised local or national expert, or that have been identified via the BWARS’ Facebook page.  If you have obtained this advice, please note the name of the person/organisation identifying the record in the ‘determiner’ field (e.g. ‘Stuart Roberts, BWARS Facebook’) and add the wording received to the comments box.

Habitat

Found in various habitats including gardens, grassland and open woodland areas.

When to see it

It has two generations per year, being on the wing from March to May and then from late June to August.

Life History

They nest in the ground, usually where the soil is quite soft. A small nest is constructed containing a few cells, which the female fills with pollen. A single egg is laid in each cell and the larvae feed on the pollen.

UK Status

Fairly frequent and found throughout Britain, though mostly southern.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Additional images

All NatureSpot records