Description: Wingspan 42-52mm. Adults are ochreous-brown and, like other prominents, rest with their wing held tightly over their body. The forewings have a pebble-shaped mark and a dark, curved postmedian line towards the apex of the wing. The hindwing is pale, whitish-brown with a dark, discal lunule. The thorax and abdomen are dark brown and quite hairy. Early May to late August.

World Distribution: Throughout Europe to eastern Asia.

Irish Distribution: Common and widespread over much of N. Ireland and on Rathlin Island.

Ecology: A distinctive species found in a variety of habitats including, bogs, fens, damp woodland and other marshy areas. Adults come frequently to light in small numbers and are regularly seen in garden traps. The larvae are often found on the lower branches of small willows growing on the margins of woodland and on isolated trees. July and August appear to be the best months to find the larvae, when they are large and easily spotted. It overwinters as a pupa.

Key Identification Features:

• Pebble mark at the apex of the forewing
• Resting posture
• Discal lunule or mark on the hindwing

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

iNaturalist: Eligmodonta ziczac at iNaturalist World Species Observations database.