The Silver Cloud (Xylomania conspicillaris).
Three forms of this species occur with us. In that represented on Plate [128], Fig. 4, the fore wings are almost entirely
blackish. Another has a larger portion of the inner marginal area ochreous brown, or whitish, ab. melaleuca, Vieweg; a third form, and the least frequent, may be described as pale ochreous brown with darker mottling on the basal half, and black central markings representing a broken streak from the base of the wing to the outer margin, in this form the pale outlined stigmata are fairly distinct, and there is a blackish shade between them extending from the front to the inner margin. From chrysalids obtained by digging under oak and elm trees in a private park several miles from Taunton, Somerset, Mr. H. Doidge (1901) reared moths and obtained eggs which were laid in a batch on the covering of the cage in which the female was placed with a growing plant of bird's-foot trefoil. The eggs hatched on May 31, ten days after they were laid. The young caterpillars were purplish grey, but after feeding on the yellow flowers they assumed the same colour. "After finishing the flowers they commenced on the leaves, by which time they were a pale green colour, with a yellow spiracular stripe, and were fond of resting by day on the stems of the plant. As they approached the final stage, the green became shaded with brown and black," and then resembled the ripening seed pods. They were afterwards supplied with blackthorn, and did not object to the change of food. They also ate dock (sparingly), and Trifolium minus. "About July 8 they began to go under ground to pupate. The pupæ, which were of a dark reddish-brown colour, and somewhat obese and blunt, being enclosed in a very compact and brittle earthy cocoon" (Doidge).
The moth is out in April and May, but is very local in England. It has occasionally been found at rest on isolated tree trunks or on posts, but very rarely captured in any other way. Specimens have been obtained from chrysalids dug up now and then from about the roots of trees, but perhaps most of the specimens in collections, not numerous altogether, have been reared from eggs. In England the species is only known
to occur in Kent, Surrey, Suffolk, Gloucester, Somersetshire, Worcestershire, and Herefordshire. Barrett also mentions one specimen at Gower, South Wales.
The Beautiful Arches (Eumichtis (Hadena) satura).
Of this species (Plate [121], Fig. 5) probably less than a dozen specimens have been taken in England, and apparently none in any other part of the British Isles. It is very similar to some of the darker forms of E. adusta, specimens of which have often been mistaken for examples of the present species and recorded as such. The wings are rather more ample; the reniform and orbicular stigmata are reddish, with a blackish cloud under them, and the space between the second and submarginal lines towards the inner margin is also reddish. The hind wings are dark in both sexes. The caterpillar, which is said to feed in July and August on hop, honey-suckle, and cherry, among other plants, is pinkish brown, darker above; the dusky-pink central line on the back is interrupted and indistinct, and on each side of it is a series of oblique greyish but not clearly defined streaks; the line low down on the sides is yellow-green. The moths flies in June, July, and August.
Abroad the species occurs in Central and Northern Europe (except the most northern parts, and perhaps Western France); eastward the range extends to Amurland.
The Dark Brocade (Eumichtis (Hadena) adusta).
The sexes of this moth are figured on Plate [121], Figs. 3♂, 4♀. The ground colour is grey-brown in some examples of this species, whilst in others, especially in the north of England and in Scotland, the colour ranges through rich reddish brown, blackish brown to almost black. In the lighter coloured forms the markings are usually clear and distinct, but in the darker forms are often much obscured. The caterpillar is somewhat variable in colour and markings. Barrett describes one form as pale sage green strongly tinged with ochreous and dusted with greyish brown; the line along the middle of the back is white, interrupted, and edged with greyish brown; a series of outlines of greyish-brown diamonds spread over to the brown margin of the pale ochreous stripe along the whitish spiracles, and form a network on the back and sides. Another form, described by Buckler, has the general colour brilliant yellow, suffused on the upper surface with deep rose pink; a stripe on the middle of the back composed of two darker pink lines, united and forming a spot at the beginning of each segment, and an interrupted yellow stripe on each side. It feeds from July to September on grass and various low plants, including knot-grass, bladder campion (Silene cucubalus); also sweet gale, sallow, etc. The moth flies in June and July, sometimes in May. The species occurs in woods and on heaths and moors, and is generally distributed, and more or less common throughout the British Isles. The range abroad extends to Amurland.