Heterarthrus nemoratus

    Description

    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.

    Habitat

    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

    Uncommon

    VC55 Status

    Uncommon in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map