Osmia bicornis (rufa)
The Red Mason Bee - Osmia bicornis (previously known as Osmia rufa) is a common solitary bee, widespread in England, Wales and lowland Scotland and on the wing April - June. Both sexes have orangey-red hairs but the male is smaller and with a tuft of white facial hairs. The female has two horn like protuberances on her face which are used to assist in nest construction. Holes in timber and walls are used for nesting and the Red Mason bee is one of the species that can be attracted to “bee hotels”. Nest holes are sealed with a plug of mud.