Double Square-spot
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Xestia triangulum
Fairly common & widespread in Britain, mainly nocturnal.
The Larva is ochreous brown, black speckled; the lines pale; a row of oblique dark subdorsal bars.
The Larvae feeds on various trees & shrubs.
This species has pale brown forewings marked with two distinctive black marks.
Despite the common name, only one of these is square, the other being roughly triangular.
The hindwings are similar in colour to the forewings.
The Moth flies at night in June and July in the British Isles.
It is attracted to light and sugar and to flowers such as Wood Sage.