Description: Wingspan 34-50 mm. Forewings long with a pointed apex. In colour these range from light to dark rosy brown. Stigmata concolorous with the base colour and finely outlined with a darker fine line. The antemedian line is strongly convex; postmedian line is well defined and curved towards the costa. The subterminal areas are noticeably paler in most individuals. Hindwings have a glossy appearance and range in colour from white through to light fuscous depending on the coloration of the adult. Late July to early October.

World Distribution: Common and generally distributed across western Europe in damper areas from northern Spain to Fennoscandia.

Irish Distribution: Common and widespread throughout all counties including Rathlin Island, Antrim.

Ecology: A species mainly associated coastal cliffs, marshes and waste ground. Adults are attracted to light in small numbers and can be found at rest after dark on low-growing vegetation. The larvae feed on iris Iris spp., dock Rumex spp., plantain Plantago spp. and horse-tail Equisetum spp. and possibly other low-growing plants. It overwinters as an egg.

Key Identification Features:

• Pointed apex on the forewings
• Darker line on the stigmata
• Curved postmedian line
• Glossy white hindwings

Distribution Map from NBN: Hydraecia micacea at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Hydraecia micacea at iNaturalist World Species Observations database.