Willow Gall Sawfly - Pontania pedunculi

    Alternative names
    Eupontania pedunculi
    Description

    Pontania pedunculi is a sawfly that causes a gall on certain species of Willow: Salix capraea (Goat Willow), Salix cinerea (Grey Willow) and Salix aurita (Eared Willow). The gall is commonly seen but the adult sawfly rarely so. The gall is generally pea-shaped, starting green but becoming red as it matures. It is hairy and only found on the underside of the leaf.

    Identification difficulty

    Adult Gall

    ID guidance
    • gall found on Salix capraea (Goat Willow), Salix cinerea (Grey Willow) or Salix aurita (Eared Willow)
    • gall is pea-shaped and hairy
    • gall is on the underside of the leaf
    Recording advice

    If a gall, it is essential to say which tree species it was on.

    Habitat

    Hedgerows and damp places where the host Willow trees are present.

    When to see it

    Adult May - August

    UK Status

    Fairly common in England.

    VC55 Status

    Fairly common in Leicestershire and Rutland.

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    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map