Batman Hoverfly, Myathropa florea, on hogweed in a clearing below Staindale Lake, Dalby Forest, North Yorks Moors. It is supposed to have a Batman logo-shaped marked on the rear of the thorax, but individuals can be variable.
The larvae of this hoverfly are ‘rat-tailed maggots’ living in wet hollows in woodland, although they’ll make use of buckets and plastic containers.