Identification

The pair of blackish spikes projecting outwards from the dark cross-line is diagnostic.

Recording method

Can be fond during the day on tree trunks and rocks, comes to light.

Life cycle

One generation. Overwinters as pupa. Larvae are present July to September.

Larval foodplants

Rowan.

Habitat

High and low altitude moorland, also, open woodland.

History

First recorded for Dumfries and Galloway in 1862v for VC73 at Dalskairth by Lennon, in 1905 for VC74 at Corsemalzie by Gordon and in 1955 for VC72 at Tynron by Duncan.