Large Walnut Aphid - Panaphis juglandis

    Alternative names
    Dusky-veined Walnut Aphid

    The fourth-instar nymph has transverse rows of brown patches on the dorsal abdomen. The adult alate is large and stout-bodied. It has a darkened head and thorax, and a yellow abdomen with dark brown transverse bands. The forewing veins are fuscous-bordered.

    Identification difficulty

    May occur on European Walnut (Juglans regia) where it is present.

    When to see it

    When Walnut is in leaf.

    Life History

    Panaphis juglandis live on the upper sides of leaves of European Walnut in rows along the veins, and are sometimes ant-attended.

    UK Status

    Status in Britain is hard to determine due to lack of records.

    VC55 Status

    Status in Leicestershire and Rutland not known.

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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