This large hoverfly is unlike the other UK Eristalis species in being a furry bumble bee mimic. The males are dark with a reddish-brown tail whilst the female has a white tail and is somewhat larger. This species always has a yellow scutellum.

Merodon equestris, a similar furry bumble bee mimic with the same loop in the R4+5 vein found in the Eristalini, has all black legs.

It is most commonly seen in marshy woodland.

March to November peaking in July.

Larvae have been found in farmyard drains and ponds with decaying vegetation.

It is widespread in Britain but not usually numerous.

Fairly frequent in Leicestershire and Rutland.