Common or Lesser Rustic
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Mesapamea secalis or didyma
Very common throughout Britain, mainly nocturnal.
The Larvae feed on the inside the stems of various grasses, including cock's-foot and tall fescue.
Forewing varying in ground colour from bluish white, cream white, through pale and dark grey, sometimes ochreous or brownish-tinged, to grey brown, redbrown. or purplish brown; the median area and terminal area darker, fuscous brown or blackish brown, generally with a broad black brown streak from below the claviform stigma along submedian fold to outer line.
Adults are on wing from July to August.