Grey Pug Eupithecia subfuscata
Wingspan 17-21 mm.
A common and widespread species throughout most of Britain, there are two main forms. The typical form is brownish, but the dark grey ab. obscurissima is also quite common, especially in urban areas.
It flies in May and June, and sometimes again in August, and can be found in a wide range of habitats.
The larvae live on a variety of herbaceous plants, eating the flowers and leaves.