Look at this little beauty:
I photographed her last week at Hidcote, the wonderful National Trust gardens in Gloucestershire, feeding on a Euphorbia.
She is Andrena cineraria, and she is common in gardens across much of Britain.
She sort of has a colloquial English name - the Ashy Mining Bee. And she's one of over 250 species of bee in Britain, of which maybe 10-20 species are in each of our back gardens.