Its fore wings are orange yellow, with purplish markings arranged as represented in [fig. 165]. The hind wings are yellowish white.
The caterpillar is brown, with a lateral stripe formed by numerous red, yellow and white dots. It feeds on sallow (Salix caprea) and various low plants.
It is full grown in June, and the moth appears in September.
Family—Cosmiidæ
The Dun-bar (Calymnia trapezina)
Our example of this family is the Dun-bar, common everywhere during July and August.
Its fore wings are greyish ochreous, with a darker band across the middle. On each side of this band is a white line margined with
dark grey, and there is a row of black spots along the hind margin. The hind wings are smoky brown, becoming paler towards the base.