Description: Wingspan 34-44 mm. Forewings light brown with a bright brass-like metallic suffusion from the basal area to the apex of the wing. The frons and patagium is normally brownish orange. Antemedian and post median lines are quite fine and not clearly defined. Hindwings dark fuscous with a yellow fringe. Mid-June until late August.

World Distribution: Eurasiatic; common and widespread across western Europe from Portugal to central Fennoscandia.

Irish Distribution: Common and widely distributed across all counties including Rathlin Island.

Ecology: A distinctive moth and difficult to confuse with any other species. It is found in a variety of habitats including woodland and suburban gardens. Adults are come frequently to light and also to the flowers of Red Valerian Centranthus ruber, Buddleia Buddleja davidii and thistles Cirsium and Carduus spp. The larvae feed from the autumn through to spring on Common Nettle Urtica dioica, Marjoram Origanum vulgare and probably other low-growing plants. It overwinters as a larva.

Key Identification Features:

• Key Identification Features:Brass-like appearance of the forewings
• Orange-coloured frons and patagium

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

iNaturalist: Diachrysia chrysitis at iNaturalist World Species Observations database.