Season (Adult / Immature):
National Status: Common
Local Status: Uncommon and local resident.
Local Record: Grade 3 adult, 2 leaf-mine See here for explanation
Flight time: May-mid Jun.
Foodplant: Oak spp.
|Year first recorded||2014||2007||1999||2004||2004|
|Year last recorded||2014||2014||2014||2014||2013|
|Number of records||2||7||58||20||5|
|Number of individuals||6||0||485||18||0|
For the county, we have a total of 92 records from 83 sites. First recorded in 1999.
Most records are of leaf-mines.
Similar species: 0039 Ectoedemia heringi.
Sutton & Beaumont, 1989: Old records are unacceptable because of confusion with allied species (Emmet, MBGBI 1). The distribution map 35 shows records from vice-counties 61 and 62 made 1972-74.
Argus 47, 2001-04:
VC64. Hookstone Woods, Harrogate, mines 4.11.2004; Knaresborough, mines 4.11.2004 (CHF); Sharow, mines on oak 5.11.2004 JCW). NEW VICE-COUNTY RECORD.
VC65. Sutton Howgreave and near Snape, mines on oak, 11.11.2004 (CHF). NEW VICE-COUNTY RECORD.
2013 (CHF):Mines of this species are usually distinctive enough for an identification to be made. It mines late in the season, in late October and November, and is often conspicuous in green "islands" in fallen leaves. The egg is laid on the upperside of the leaf, next to a vein. The mine begins as a narrow corridor, filled with frass, running along a vein: usually the midrib, or along a lateral vein and then running in the direction of the midrib. The corridor abruptly widens into a blotch, usually in the axil of the midrib and a side vein. The larva makes a slit in the lower epidermis of the blotch, by which part of the frass is ejected.