Main: (Nepticulidae / Nepticulinae)
04.040 [B&F: 0074] Stigmella assimilella (Zeller, 1848)


Local in woodland throughout much of south-eastern England and in the Scottish Highlands. Probably under-recorded in Hampshire, where the extent of known records correlate with those areas in which the recording effort is concentrated. Not recorded from the Isle of Wight since 1973. Wingspan 5.4-6.2 mm. Adults difficult to distinguish from other Stigmella species, and more frequently recorded in the larval stage, when mines are relatively easy to find where they are present. Larva mines leaves of Aspen, over-wintering as a pupa.

Flightime guide

Records Received By Year

% of total records
Max records: 4
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Percentage of Total Records

Total records
Max Percentage: 0.0041324873
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Phenology - Larval Records

Max records: 5
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

As above but the larger the symbol, the greater the number of records
Click for distribution map

Detail records

VC10 Isle of Wight
St Helens (SZ68)29-Sep-1973-Ffennell, DWHLarval
VC11 South Hampshire
Botley Wood (SU51)1980-Langmaid, JR-
Browndown (SZ59)26-Aug-1985-Langmaid, JR; Sterling, DHMine (vacated)
Havant Thicket (SU71)26-Oct-1986-Langmaid, JR; Sterling, DHMine (vacated)
Hayling Island (SZ79)01-Nov-1990-Langmaid, JohnMine
Botley Wood (SU50)03-Nov-1990-Langmaid, JohnMine (vacated)
Botley Wood (SU51)1991-Dickson, RJLarval
Botley Wood (SU51)1991-Dickson, RJLarval
Hayling Island (SZ79)16-Jul-1991-Langmaid, JohnMine
Botley Wood (SU50)30-Sep-1991oneLangmaid, John & Dickson, RIchardMine
Hayling Island (SZ79)03-Nov-1992-Langmaid, JohnMine (vacated)
Hayling Island (SZ79)17-Oct-1996-Langmaid, John & Thirlwell, IanMine
Hayling Island (SZ79)02-Sep-1997-Langmaid, John & Thirlwell, IanMine
Cams Bay, Fareham (SU50)10-Oct-1997twoLangmaid, JR; Agassiz, DJL; Koster, JCMine (vacated)
Hayling Island (SZ79)14-Oct-1997-Langmaid, JR; Koster, JCLarval
Hayling Island (SZ79)07-Sep-1998oneLangmaid, JR; Jansen, MGMMine (vacated)
Browndown (SZ59)17-Sep-2002-Elliott, Brian & Langmaid, JohnMine
Havant Thicket (SU71)12-Nov-2003-Elliott, Brian & Langmaid, JohnMine (vacated)
Hayling (SZ69)23-Aug-2005-Elliott, Brian & Langmaid, JohnMine (vacated)
Bell's Copse, Havant Thicket (SU71)02-Oct-2007-Elliott, Brian & Langmaid, JohnMine
Havant Thicket (SU71)26-Sep-2008twoLangmaid, John & Davis, TonyMine
Hayling Island (SZ79)29-Sep-2009oneElliott, Brian & Langmaid, JohnMine (vacated)
Hayling Island (SZ79)03-Sep-2010oneLangmaid, John, M.R. & J.E. YoungMine (vacated)
Oxleys Coppice, Fareham (SU50)05-Oct-2011twoLangmaid, John & Dickson, RIchardMine (vacated)
Botley Wood (SU50)15-Sep-2012twoDavis, Tony Mine (vacated)
Havant Thicket (SU71)07-Oct-2014threeLangmaid, John & Young, MarkMine
Staunton CP (SU70)04-Nov-2014-Langmaid, John & Thirlwell, IanMine (vacated)
Hayling (SZ69)04-Oct-2015oneLangmaid, John, M.R. & J.E. YoungMine (vacated)
Marwell Zoological Park (SU52)12-Sep-2016oneHubble, David Mine
Staunton CP (SU70)02-Nov-2016-Langmaid, John & Phillips, JohnMine
Hayling Island (SZ79)05-Sep-2019oneLangmaid, John & Phillips, JohnMine (vacated)
Hayling (SZ69)05-Sep-2019-Langmaid, John & Phillips, JohnMine (vacated)
Staunton CP (SU70)17-Sep-2019oneLangmaid, JR; Thirlwell, IR; Phillips, JWMine (vacated)
VC12 North Hampshire
Fleet Pond (SU85)07-Oct-1997-Green, David G Larval
Fleet (SU75)29-Aug-2003oneEdmunds, RDLarval
Fleet (SU75)17-Oct-2004-Edmunds, RDLarval
Fleet (SU75)10-Sep-2005-Edmunds, RDLarval
Pamber Forest (SU66)05-Sep-2006-Elliott, Brian & Langmaid, JohnMine (vacated)
Fleet (SU75)03-Oct-2007-Edmunds, RDMine
Butterwood, Greywell (SU75)11-Oct-2007-Edmunds, RD; Norriss, TJ; Boswell, PAMine
Fleet (SU75)08-Nov-2007-Edmunds, RDMine
Black Wood (SU54)10-Oct-2011-Green, David G Larval
Axmansford (SU56)18-Oct-2014oneBolton, Andy Mine
VC22 West Berkshire (Hants county)
Burnt Common (SU66)02-Oct-2004oneDennis, GrahamMine

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