Light Knot Grass - Acronicta menyanthidis


    Wingspan 33 to 41 mm. 

    Identification difficulty
    Recording advice

    Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


    A species of acid moorland and damp heathland.

    When to see it

    The moths are on the wing between May and July when they can be found resting exposed on fenceposts and rocks. At night they will come to light.

    Life History

    The caterpillar is blackish-brown with a red spiracular line dotted with white. It feeds on a number of moorland plants including Bog Myrtle and Bilberry.

    UK Status

    Distributed over northern England, Wales, Scotland and parts of Ireland. In a recent survey to determine the status of all macro moths in Britain this species was classified as local.

    VC55 Status

    Rare in Leicestershire and Rutland.

    73.042 BF2286

    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map