Fenella nigrita

    Description

    This is a small (3 or 4 mm) black sawfly with pale yellow legs.  Its larvae mine the leaves Agrimony, Cinquefoils and Brambles. The mine is a full depth transparent blotch without a clear preceding corridor, quickly and strongly widening from the start. Frass in sausage-shaped granules.

    Identification difficulty
    Habitat

    Areas where the larval foodplants occur.

    When to see it

    Larval mines can be seen in summer and autumn when the host plants are in leaf.

    UK Status

    Status is difficult to determine due to lack of records but it seems to be quite widespread, though perhaps infrequent.

    VC55 Status

    Rare or under recorded in Leicestershire and Rutland.  The Broughton Astley record of 28th September 2018 may be the first for VC55.

    Leicestershire & Rutland Map

    UK Map