Cuckoo Bee perhaps - for ID

Cuckoo Bee perhaps - for ID

Observation - Cuckoo Bee perhaps - for ID. Description: Seemed to be all black apart from pale hairs between abdomen segments and yellow hairs on lower face (manibles?). Long antennae and long abdomen - no pollen sacks. Perhaps an all black form of something usually more brightly coloured?

Seemed to be all black apart from pale hairs between abdomen segments and yellow hairs on lower face (manibles?). Long antennae and long abdomen - no pollen sacks. Perhaps an all black form of something usually more brightly coloured?