Andrena bicolor?

[Africa]

The Campanula is a source of distraction these days in my garden, there are Leafcutter males patrolling and jumping on females, and today this little bee turned up, smaller than a honeybee, her legs covered on yellow pollen and with a reddish thorax and black abdomen. She fed for quite a while in the campanulas, but I could only get some poor shots. I think is an Andrena, maybe bicolor? the head shape is quite unusual, so maybe this would help.
Any help with ID or narrow it down to a few species would be greatly appreciated.

[eucera]

I would say so. A. bicolor seems to like Campanula