Ectoedemia heringella (Mariani, 1939)
new holm-oak pigmy
Quercus ilex, UK, Norfolk, Downham Market. 11.ii.2021 © Rob Edmunds
Quercus ilex, UK, Cambridgeshire, Ely, 8.iii.2017 © Rob Edmunds
Egg at the upper side of the leaf, often near a vein. The mine is a strongly contorted gallery, almost entirely filled with black frass. Often many mines in a leaf.
Quercus alnifolia, x crenata, ilex.
In outbreak situations, but probably also under normal circumstances, also on Q. robur (van Nieukerken ao, 2010a).
Larvae from November till April (van Nieukerken, 1985a).
Not known from the Benelux countries (Fauna Europaea, 2009).
distribution within Europe
Mediterranean region from southern France, Corsica, Sardinia, and Italy to Cyprus; from 2002 on also in Britain.
Found by Martin Honey for the first time in Britain in 2002, in the gardens of Kensington Palace. Since then the species has rapidly expanded over the south of Britain, at the expense of the native Holm Oak. Some trees look browned from a distance (Prichard, 2005a). A road lined with monumental Holm Oaks in Kew Gardens is threatened by the feeding of heringella, in combination with Phyllonorycter messaniella en Stigmella suberivora (Times online, 2009).
Arenberger & Wimmer (1996a), Baldizzone & scalercio (2018a), Edmunds (2007a), Hering (1957a), Laštůvka & Laštuvka (1997a, 1998a), van Nieukerken (1985a, 1986a), van Nieukerken, Laštůvka & Laštůvka (2006a, 2010a), Pritchard (2005a), Sims (2008a), Skala (1939a), Triberti & Braggio (2011a).