Wingspan 38-42 mm. Aptly named after the canary-yellow thorax, or 'shoulders'.

It frequents woodland, gardens and a range of other habitats.

It has a single generation which flies from July to October and is regularly attracted to artificial light.

The larvae feed on a variety of deciduous trees.

This is a fairly common species all over Britain. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

Fairly common in Leicestershire and Rutland. L&R Moth Group status = A (common and resident)