Species Account

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Summary Data

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.

Regional breakdown:

Year first recorded20142007199920042004
Year last recorded20142014201420142013
Number of records2758205
Number of individuals60485180
Unique positions2752195
Unique locations2750195
Adult records00500
Immature records2753205

For the county, we have a total of 92 records from 83 sites. First recorded in 1999.


04.090 Ectoedemia subbimaculella 05 bred ex mine on Oak
© Dave Shenton
04.090 Ectoedemia subbimaculella 04 mine on pedunculate oak
© Andy Nunn
04.090 Ectoedemia subbimaculella 03 larva close up
© Dave Shenton
04.090 Ectoedemia subbimaculella 02 tenanted leaf mine
© Dave Shenton
04.090 Ectoedemia subbimaculella 01 mine
© Charles Fletcher, 4 Nov 2004

Species Account

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.

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