Heterarthrus nemoratus


    Adults: Small black sawflies. Females only. 4.5 mm long. Black thorax with yellow pronotum and tegula, white legs but with coxa and basal half of femur black. Forewing with slight brown band.

    Identification difficulty

    Around Birch and other deciduous trees.

    Life History

    Larvae: Creamy white with distinct brown head capsule about 8 mm long at the last feeding stage. Food plants Birch, but also Sycamore and Field Maple.

    UK Status


    VC55 Status

    Uncommon in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map