Wild Service Aphid - Dysaphis aucupariae

    Description

    Apterae of the aphid Dysaphis aucupariae cause pseudogalls on the leaves of Wild Service-tree (Sorbus torminalis) The pseudogall is initially pale yellow green, but soon becomes tinged with red. Its form is somewhat variable, either curled from the leaf apex to the base or laterally (from the sides of the leaf inwards). The aphids, ± 2.5 mm long, are dark greyish green, powdered with copious wax.

    Identification difficulty

    Adult Gall

    Recording advice

    Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters. Gall: Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

    Habitat

    Where Wild Service-tree (Sorbus torminalis) is occurs - (only rarely found on S. aucuparia).

    When to see it

    In April the fundatrices of Dysaphis aucupariae stimulate the development of rolled pseudogalls on the leaves of Wild Service-tree (Sorbus torminalis).

    UK Status

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

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map