Chimney sweeper

Odezia atrata
  • Where it lives:

  • Non native species

About

The chimney sweeper is a day-flying moth that can be seen flying in June and July. In the south of its UK range, it is mostly found on chalk or limestone grasslands. Further north it is more common and lives in a wider range of habitats, especially along streams and in other damp, grassy places.

Chimney sweepers fly on sunny days, though males may also fly in more overcast conditions. They often perch on tall grasses and at suitable sites can be seen in large numbers, making for an impressive spectacle!

How to identify

The chimney sweeper is recognised by its sooty-black body and wings, with a white fringe around the tips of the forewings. They fade to a brownish-black over time. The chimney sweeper is sometimes mistaken for the small blue butterfly.

Did you know?

Chimney sweepers spend the winter as an egg, laid in summer. The caterpillars hatch around April and feed almost exclusively on the flowers and seeds of pignut, before pupating in the ground.