Two-coloured Mason Bee - Osmia bicolor


The female of this small (12 mm) bee is particularly attractive, with a black head and thorax and bright gingery hairs covering the abdomen. In the male the ginger is less striking.

Identification difficulty

Various habitats.

When to see it

April to July.

Life History

This is a bee that uses vacant snail-shells as nest sites. It uses masticated leaves to build up to five cells inside before camouflaging the shell with grass or dead leaves.

UK Status

Mainly found south of a line between The Wash and the Severn Estuary.

VC55 Status

Infrequent in Leicestershire and Rutland

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map