The moths are out in August and September, and in the late afternoon may be seen, newly emerged from the chrysalis, on ash trunks, or on twigs and herbage immediately around the tree stems. When on the wing at night it is attracted by light, especially electric, and by sugar. Now that the habits of the species are better known than formerly, it has been ascertained to occur in most English counties. In Scotland it is widely distributed up to Argyll and Perthshire; it has been recorded from several parts of Wales, and in Ireland is found in counties Antrim, Tyrone, Fermanagh, Down, Armagh, Louth, Westmeath, Wicklow, Sligo, Galway, Tipperary, and Cork.
The Lunar Underwing (Omphaloscelis (Anchocelis) lunosa).
In the general colour of the fore wings, this species, of which four figures will be found on Plate [7], ranges from pale ochreous
brown to dark blackish grey. The typical form (lunosa, Haworth) has the ground colour pale, or bright, reddish (Figs. 1 and 3); the markings are well defined, and the wing rays are sometimes pale ochreous, or whitish. Four modifications of this form have been named; one of these has pale veins, but the general colour is red brown (ab. brunnea, Tutt); in another (Fig. 2) the colour is ochreous brown, the veins pale, and the other markings distinct (ab. humilis, Humph. and Westw.). Of the greyish forms, var. agrotoïdes, Guenée, is the darkest (Fig. 4).
The caterpillar is brownish, inclining to greenish beneath; there are three whitish lines along the back, the outer edged below with blackish; a thin whitish line along the sides is shaded above with blackish. It feeds on meadow grass (Poa annua), and other kinds of grass, from October to May. The moth appears in September and October, sometimes at the end of August. It is partial to light and to sugar, and where the latter is smeared over the foliage of trees and bushes it seems better attended by this, and other autumnal moths, than when painted on tree-trunks in the usual manner.
The species seems to be pretty generally distributed throughout Southern and Western England, and in some seasons it is very common. Eastward and through the Midlands it is perhaps less frequent; in the northern counties it is scarce on the east, but locally common on the west. It occurs in Wales; also in Scotland up to Perthshire. According to Kane, it is widely distributed in Ireland, but most common on the coast.
Abroad, it appears to be confined to France and Spain, although it has been recorded from North-west Africa.
The Red-line Quaker (Amathes (Orthosia) lota).
In its typical form this species is of a leaden-grey coloration on the fore wings, but these wings sometimes have a reddish