The moth is out, as a rule, in July and August, but sometimes much earlier. I reared specimens during the last week in May, 1907, from caterpillars sent from Torquay by Mr. Walker. It
lurks among the vegetation growing on banks, and the hedgerows of lanes, etc.
In the south of England the species chiefly affects the coasts of Dorset, Devon, and Cornwall; but it occurs locally in and around beech woods of Kent, and is more frequent in those of Berks, Oxford, and Bucks. From Somerset it spreads through the western counties, including part of Wales, to Lancashire. It is, however, most common among the hills and rills from Yorkshire northwards. In Scotland it is local in Roxburgh, widely distributed, and sometimes abundant in Clydesdale and throughout the Highlands to Sutherland. It has also been noted from Arran. Local in Ireland, but apparently abundant in some parts.
Green Carpet (Amoebe viridaria).
This species (Plate [75], Figs. 7, 8), also, has green fore wings, with a rather deeper green central band and basal patch. The former is limited by white lines marked with black, conspicuously so on the front and inner margins; there are also black marks on the front edge of the basal patch, and at the tips of the wings. The green colour quickly fades to a yellowish or sandy tint.
The wrinkled caterpillar is olive brown, with bristle-bearing black dots; the back has a dark central line, and is adorned with reddish V-shaped marks except on the end rings. It feeds in the spring, after hibernation, on bedstraw (Galium), but it is said to eat sorrel, dead-nettle (Lamium), etc.
The moth is out in June, earlier in the south, and later in the north. It hides among herbage during the day, and may occasionally be seen resting on tree-trunks, etc., then feeding just before dark about hedges, and on commons and heaths. Specimens have been noted in some years in September.
Except that it has not been detected in the Shetlands, the species seems to be found in all parts of the British Isles.