The English name of this generally distributed, and usually common, greyish-brown moth (Plate [154], Figs. 4, 5) applies more especially to the mouse-like way it scuttles off when discovered in its retreat by the collector. In colour, however, it is sometimes not unlike the familiar little rodent. The caterpillar (Plate [156], Fig. 3) is green with white lines and stripes along the back and sides; spiracles white, margined with black; head yellowish-green. In another form the ground colour is pale reddish brown. It feeds from April to June on sallow, hawthorn, and many other plants. Barrett states that it is partial to the blossoms, particularly yellow ones, of garden as well as wild plants. The moth flies in July and August, sometimes later.
The range abroad extends to Central Asia and to the Atlantic States of America.
Note.—Some recent authors refer this and the preceding species to Pyrophila, Hübn.
The Pine Beauty (Panolis griseo-variegata = piniperda).
The general colour of the fore wings of this species (Plate [155], Figs. 1, 3 ♂, 2 ♀) is ochreous brown, more or less reddish tinged; sometimes greenish grey. The cross markings are bright or dull reddish brown; the orbicular and reniform stigmata are white, or outlined in white, sometimes connected by a white line along the median nervure; occasionally these marks are united, forming a blotch.
The caterpillar is green with three broad white lines along the back, the outer ones edged above with black; a yellow, inclining to reddish orange, stripe along the black spiracles; head reddish brown. It greatly resembles the needles of the Scotch fir (Pinus sylvestris), upon which it feeds from May to July. The moth is out in the spring and continues on the wing until early May, and is often common at sallow bloom, where this occurs in the immediate vicinity of pine woods; it also comes to the sugar patch not infrequently, and may occasionally be seen on the trunks of fir trees, or beaten from the boughs. The species seems to occur wherever there are fir woods or plantations throughout England, Wales, and Scotland to Ross, and is found locally in Ireland.
The White-Marked (Pachnobia leucographa).
A portrait of this moth will be found on Plate [155], Fig. 4. The fore wings are reddish brown, sometimes tinged with purplish, or clouded with blackish. The reniform and orbicular stigmata are usually yellowish grey, often only outlined, but not infrequently indistinct, and sometimes absent. The cross lines are rarely well defined, although the second line may be indicated by blackish dots flanked by whitish ones on the veins.
The caterpillar is green freckled with whitish; three whitish lines along the back are edged with dark green, the outer ones with oblique dark-green dashes spreading to the central line; head paler green. In another form the general colour is pale reddish brown, lines yellowish, and dashes darker reddish brown. It feeds on sallow, bilberry, dock, plantain, and other low plants. May and June. The moth flies in March and April, and may be found at sallow bloom around woods. The species is obtained more or less frequently in Kent, Surrey, Sussex, Hampshire, Somerset, and Devon; also in Buckinghamshire and in Suffolk. In Herefordshire it is local but not