Small black bumble (?) bee

Small black bumble (?) bee

Observation - Small black bumble (?) bee. Description: Small black bee with distinctive orange hairs on the hind legs and quite dark wings. I have been working hard on bumble bee ID but can't find anything to match this in Edwards and Jenner. Perhaps not a bumble?

Small black bee with distinctive orange hairs on the hind legs and quite dark wings. I have been working hard on bumble bee ID but can't find anything to match this in Edwards and Jenner. Perhaps not a bumble?