73.162 Dark Arches Copyright Martin Evans
 73.162 Dark Arches pale form Copyright Martin Evans
 73.162 Dark Arches Copyright Martin Evans
 73.162 Dark Arches female dark form Copyright Martin Evans
 73.162 Dark Arches female Copyright Martin Evans
 Distribution map Copyright Martin Evans
 Life stages table Copyright Martin Evans
 Life stages table Copyright Martin Evans  73.162 Dark Arches Copyright Martin Evans

Noctuidae

73.162 Dark Arches Apamea monoglypha (Hufnagel, 1766)

Common

Similar species: A large moth with variable colouring, but reasonably stable markings such as the large oval and kidney mark, the "V" shaped marking at the trailing edge of the inner central cross-line and deep "W" in the centre of the outer cross-line. If care is taken this moth is unlikely to be mistaken for any other British or Irish species.

Forewing: 19 to 26mm

Habitats: Most habitats including woodland, scrub, hedgerows, high moorland, heathland, marshland, grasslands, verges, arable land, wasteground, sand-dunes and gardens.

Habits: The moth visits flowers and comes to sugar and light.

Foodplant: The larva initially feeds on the flowers and seeds of coarse grasses such as Common Couch, Cock's-foot, Tufted Hair-grass and other grasses. It pupates under the soil.

On the European mainland it has also been recorded feeding on Wavy Hair-grass, Rye-grass and Sheep's Fescue.