Pearly Underwing Noctuidae

Peridroma saucia (Hubner, 1808)

Description: Wingspan 45-56 mm. Forewings are dark mottled brown with darker stigmata. Hindwings translucent with pale brown veining.

Key Identification Features:

Sets:  male upperside

Flight Period: A migrant species recorded between June and October in N. Ireland

Status: An uncommon immigrant from southern Europe that appears sporadically in N. Ireland. There have been recent records from Murlough National Nature Reserve and Belfast Harbour Estate, Down; Peatlands Park, Armagh; Correl Glen National Nature Reserve and Crom, Fermanagh; and, Cullinane east of Fivemiletown, Tyrone.

Ecology: A species that is seen more frequently in the autumn months. Adults come frequently to light and will also visit various flowers. It is highly unlikely that the larvae of this species could survive our winters.

World Distribution: Throughout Europe; scarce further north, although it has been recorded in Iceland. Probably resident in the Mediterranean.

Bradley & Fletcher number: 2119 Agassiz number: 73.307

Additional information:

UK Moths account


 Thompson, R. S. & Nelson, B., 2003 (Oct 2). [In] The Butterflies and Moths of Northern Ireland