This is another species with reddish brown clouded, pale ochreous brown fore wings. The ground colour may be whiter or redder than in the specimens shown on Plate [135], Figs. 7, 8. The caterpillar (Plate [130], Fig. 1) is dusky green above and whitish green beneath, the green shading into blackish along the sides; a fine whitish line along the middle of the back; usual dots black; head honey-brown and glossy, the jaws and a spot on each cheek black. It feeds on the juicy lower part of the stems of grasses, such as Triticum, but will also eat the leaves. In the spring, and till June, probably after hibernation. The moth is out in July and August, and as an uncommon event may be seen at rest on a tree trunk or paling. Stephens (1829) refers to its occurrence in the London district, and it still appears in woods around Highgate. It seems to be most plentiful in the woods of South Yorkshire, and in the Sherwood district of Nottinghamshire; but it has been found more or less frequently in several of the southern counties of England, and also in some northern ones. Its range abroad extends to Amurland and Japan.
The Bird's Wing (Dipterygia scabriuscula).
The curious wing-like marks on the blackish fore wings of this moth (Plate [137], Figs. 1♂, 2♀) are its chief features. The
stigmata are outlined in black, but are rarely paler than the ground colour. The caterpillar is reddish brown with yellow and black dots; three lines along the back, the central one white with a black edging, and the others blackish; head brown and glossy, marked with black; a blackish plate on first ring is also glossy, and is followed by a black mark on the next ring, both streaked with white. It feeds on dock, sorrel, and plants of the genus Polygonum, in July and August. The moth flies in late May and June, sometimes as a second generation in August or September. It occurs more or less commonly in most southern and eastern counties from Oxfordshire. In other parts of England, and in Scotland, it seems to be local or absent.
The Purple Cloud (Cloantha polyodon).
This moth is figured on Plate [137], Fig. 7. The first recorded British specimen was taken at Yarmouth, in June, 1839. In 1855 a specimen, found in a spider's web at Ashford, Hampshire, was exhibited at a meeting, held in May, of the Entomological Society of London. Two specimens were taken in 1892; one at Folkestone, Kent, at sugar, and the other outside Norwich, in Norfolk, at a gas lamp. In the Entomologist for 1894, there is a record of a specimen captured at sugar, July, 1891, at Clonbrock, Co. Galway, Ireland. The species has a wide range abroad, extending eastward to Amurland and Japan.
The Deep-brown Dart (Aporophyla lutulenta).
In the south of England the species (Plate [137], Figs. 9, 10) is generally of a dark brown coloration on the fore wings, and the markings are often indistinct; but blackish forms also occur, although the latter are more frequent northwards, and in Scotland and Ireland are the prevailing form of the species. In black or blackish specimens, usually referred to luneburgensis,
Freyer, the hind wings in the male, have the veins more or less blackish and dotted with black beyond the middle; var. sedi, Guenée, has the fore wings pale greyish with the markings distinct, and the central area blackish.
The caterpillar is green, sometimes tinged with pink on the first three rings; three brownish broken lines along the back, and a violet edged white line along the spiracles. It feeds on grasses, yarrow, groundsel, dock, plantain, gromwell (Lithospermum), and other low herbage; also on buds of hawthorn and sloe in the spring. October to April. The moth is out in August and September, sometimes later. It is found most frequently on the coast, perhaps, but occurs in Cambridgeshire, Hunts, Oxfordshire, Gloucestershire, Berks, Kent, Surrey, Sussex, Hants, and Isle of Wight; from Somerset to Cornwall; North and South Wales, Cheshire, Lancashire, and Yorkshire, and apparently in all counties northward except Westmoreland. Widely distributed in Scotland from the border to the Hebrides and Orkneys. It is found only on the coast in Ireland, and chiefly in the north-west.