Description: Wingspan 22-25mm. Adults generally have pale, ochreous-coloured wings, although this can vary between individuals. The median cross lines are darker and there is a greyish outer border. There is a small discal spot on each wing. End of June to late August.

Irish Distribution: Common and widespread especially in southern counties. More sporadic north of Lough Neagh and mainly confined to coastal localities.

Ecology: A small species commonly associated with woodland habitats. Occasionally found during the day and also at night when it appears frequently at light. The larvae feed on a variety of plants including Dandelion Taraxacum officinale, plantain Plantago spp., and Bramble Rubus fruticosus. It overwinters as a larva.

Key Identification Features:

• Small discal spot on each wing
• Darkish patches near the apex of the forewings
• Difficult to identify with certainty if worn

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

iNaturalist: Idaea biselata at iNaturalist World Species Observations database.