Ectoedemia louisella

    Alt Name
    Maple-seed Pigmy

    Wingspan approx 7 mm. The species has a black ground colour with creamy yellow markings and a reddish head.

    Similar Species

    Ectoedemia sericopeza is very similar but has whiter markings. In Ectoedemia louisella markings are slightly yellower and the collar is often broader.

    Identification difficulty

    Adult Larval mine

    ID guidance

    Adults need to be identified by genitalia examination.  Larval mines occur in the 'keys' of Field Maple


    Found where Field Maple is present.

    When to see it

    Adult moths are on the wing in April/May and possibly in two further generations in late summer/autumn.

    Life History

    The larva mines in the seeds (samaras) of Field Maple forming an irregular gallery commencing in the wing and concluding in the seed itself.

    UK Status

    It occurs chiefly in the south and southern half of England. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.

    VC55 Status

    Rare in Leicestershire and Rutland where the Sapcote record of 11th July 2013 is the first record for VC55. L&R Moth Group status = D (rare or rarely recorded).

    4.075 BF22

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map