See text Pipizini is a tribe of small to medium-sized generally black hoverflies, although some species also have orange spots on their abdomen.
[1] This nondescript colouring can lead to some species being confused with other dark hoverflies from other tribes.
The lack of a facial knob is a good defining feature which separates them from most of these other hoverflies.
As with other species in the subfamily Syrphinae the larvae feed on aphids though there seems to be a preference for wax-secreting aphids e.g.
[2][3][4] This hoverfly article is a stub.