The Long Hoverfly is a small hoverfly with a body that is longer than its wings. Even so, its body is rarely longer than a single centimetre. The arrangement of yellow and black bands down the length of its body makes it distinct from other hoverflies.
The larvae of the Long Hoverfly feed on aphids. Adults feed on nectar and pollen.
This hoverfly is believed to be prone to mass immigration from Europe, together with regular movement towards northern Britain. It is thought that many migrate south at the end of summer.