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Red Mason Bee

©Penny Frith

Red mason bee male © Leanne Manchester

Red mason bee male © Leanne Manchester

Red mason bee male © Leanne Manchester

Red mason bee male © Leanne Manchester 2

Red mason bee

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Enw gwyddonol: Osmia bicornis
The red mason bee is a common, gingery bee that can be spotted nesting in the crumbling mortar of old walls. Encourage bees to nest in your garden by putting out a tin can full of short, hollow canes.

Top facts

Stats

Length: 0.6-1.1cm

Conservation status

Common.

Pryd i'w gweld

March to June

Ynghylch

The red mason bee is a small, common bee that nests in hollow plant stems, in holes in cliffs, and in the crumbling mortar of old buildings. It is a solitary bee so, after mating, each female builds its own nest; she lines each 'cell' with mud and pollen and lays a single egg in each until the cavity is full. The larvae hatch and develop, pupating in autumn and hibernating over winter. The red mason bee is on the wing from late March, and feeds solely on pollen and nectar.

What to look for

The red mason bee is covered in dense gingery hair; the males are smaller than the females and sport a white tuft of hair on the face. There are many similar species of masonry bee that can be difficult to identify.

Where to find

Widespread in England and Wales, but rarer in Scotland.

Roeddech chi yn gwybod?

You can provide a home in your garden for solitary bees by putting some dry grass in an upturned flowerpot and partly burying it. Alternatively, you can make an insect home by filling an old tin can with short lengths of cane, placing them vertically inside the can so that their hollow insides are visible.