Agriphila tristella is a common moth found in grassland throughout Britain. It has a distinctive white streak along its side, which branches into 'fingers' towards the wing tip. The typical wingspan of Agriphila tristella is around 27mm.
It is a nocturnal moth, and can normally be seen from June to September. The larvae of Agriphila tristella feed in the base of stems of grass.
43 recovery in ACR
Bit of grass removed from top right corner of image in ACR