The males have triangular grey-brown forewings with dark-edged jagged crossbands which are distinctively held overlapping at rest. The females are completely wingless with a barrel-shaped body and a tuft of hairs on the end of the abdomen. The adult males flay after dark and are attracted to light.

The light green caterpillars can be found from late April to June overwintering as pupae in a fragile cocoon under the ground.

The forewings of the English subspecies are grey or greenish-white with a large pale spot near the centre of the leading edge. The Scottish subspecies is a darker grey. They fly at night and are attracted to light but might also fly during the day on sunny afternoons.

The caterpillars can be found from mid-May to mid-July feeding at night and resting between two leaves spun flat together during the day. They overwinter as pupae on the ground amongst leaf litter.

Generally larger than the Common Lutestring. Look for a small dark dash at the leading edge of the forewing near the wing tip. The outer half of the forewing is usually a paler colour but a darker form f. albilinea is darker.

The adults fly at night and are attracted to light.

The caterpillars can be found from late July to mid-September feeding at night and resting between two leaves spun flat together during the day. They overwinter as pupae in a delicate cocoon between leaves of the foodplant which fall to the ground with the leaves in autumn.

The English subspecies or is similar in appearance to the Figure of Eighty but the cross-lines are more wavy, often thicker and more numerous. The Scottish subspecies scotica is sometimes a paler grey colour or occasionally brown. The Irish subspecies hibernica varies between the two others in colour with paler markings.

The adults fly at night and are attracted to light.

The adults can be identified by pale grey forewings with two dark brown cross-bands. In the darker form f. nubilata the forewings are mostly brown but the cross lines are still visible. They fly from early dusk and are attracted to light.

The caterpillars can be found from April to early July feeding at night and resting between two leaves spun flat together during the day. They overwinter as eggs attached to the foodplant.

The forewings are marbled with black and white markings. They fly at night and are attracted to light.

The caterpillars can be found from late May to mid-July feeding at night and resting on the underside of a leaf during the day. They overwinter as pupae under moss at the base of a tree in leaf litter or soil.

Smaller than the Satin Lutestring. Can be identified by the pair of small dark spots in the centre of the forewing. The strength of the cross-lines varies considerably between forms. The darker form f. obscura is almost entirely grey-brown and is common across much of England. Draker forms are often found in London, Midlands and Scotland and forms with stronger bands are more often found in the north and west including Ireland.

The adults fly at night and are attracted to light.

This species can be quite distinctive although it is also very variable in its colouring. The forewings have three cross-lines; a high cross-line curving around a white spot, a central scalloped cross-line and a lower cross-line which is irregular and jagged. The wings can be predominantly warm reddish-brown but also commonly with areas of grey and brown.

The adults are incapable of feeding. They fly at night and are attracted to light. In mainland Europe they overwinter as part-grown larvae on the ground among fallen tree needles or moss.

The forewings are primarily a pale grey colour with a central wavy-edged darker band. The females are duller and slightly browner in colour.

The adults are incapable of feeding. They fly at night and are attracted to light. The caterpillars can be found from April to June feeding at night and resting on twigs or bark during the day, before they pupate under bark or among plant debris. They overwinter as eggs on the foodplant although in the northern part of their range they might spend a second winter as nearly full-grown larvae.

One of only three species of this family that are found in the British Isles. The adults are incapable of feeding. The caterpillars live inside the trunks of a variety of broadleaved trees feeding on the wood. They overwinter three or four times as larvae and a final time as pupae.

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