Dusky Peacock Macaria signaria
(Hübner, )[Synonyms: Semiothisa signaria]
Wingspan c.31 mm.
A species that until recently has been regarded as an occasional immigrant, there is now known to be an established breeding population in Kent.
There is a single genration, flying from May to July, after dark, and the adults are attracted to light.
It can resemble a worn example of Peacock Moth Semiothisa notata or Sharp-angled Peacock Semiothisa alternaria, but lacks the dark-edged notch in the forewing typical of both those species.