Least Black Arches Nolidae

Nola confusalis (Herrich-Schaffer, 1847)

Description: Wingspan 16-24 mm. Small micro-like species with pale white forewings suffused with darker patches especially along the costa; there is also a small a subcostal streak which is normally visible on fresh individuals. Hindwings pale white with a small dark discal spot.

Key Identification Features:

Sets:  male upperside

Flight Period: Late April to the end of July.

Status: Widespread and not uncommon in southern counties in a line west from Belfast Lough to the northern boundaries of the Erne System. There are no recent records north of Lough Neagh but there is no evidence to suggest that it has declined in this area.

Ecology: A small species similar in structure and shape to a micro moth which has probably been overlooked in a number of suitable sites. Adults come to light and rest by day on the trunks of trees. It is mainly a woodland species, but is does occur on other habitats including old mature orchards and parkland. The larvae can be found during July and August on lime Tilia spp., oak Quercus spp. and possibly lichens growing on the trunks and branches of trees. It overwinters as a pupa.

World Distribution: Eurasiatic; common and widespread throughout western Europe to Fennoscandia east to Asia and Japan.

Bradley & Fletcher number: 2078 Agassiz number: 74.004

Additional information:

UK Moths account


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