4.002 BF116  – Grey Birch Dot – Stigmella lapponica – (Wocke, 1862) Adult Micro:  CAT 4 – Dissection required – Gen-Det-Reqd       Leaf-miner:  CAT L – The leaf or a Photo required – reared and possibly dissected       Larval Case:  C1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data        purple – Leaf-miner     day-flying – Day-flying
Taxonomy:   Micro   >>  Nepticulidae  >> Nepticulinae
Other Name/s: Drab Birch Pigmy
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Stigmella sorbi – Barred Rowan Dot / Stigmella confusella – Pale Birch Dot
ID pointers: Adults are coarsely-scaled and dull greyish-brown with an indistinct creamy fascia.
Distribution:  (Last record: 28 August 2025 at Glossop, Gnat Hole )  –  National Status – Fairly common throughout the British Isles – Derbyshire status is thought to be common but more records required.
General Comment: Notes by Christian Heintzen on image dated 28/8/2025 – on Birch (Betula) > long, often angular gallery (A,B) > first part of corridor completely filled with green frass followed by an abrupt transition to a narrow and often interrupted frass-line (A.1, B.1)
Flight Period: May –  One generation in May Mine Period:  June /  July /  October
Mine Period Additional: June-July (sometimes in October) can have a small second generation in October
Mine ID Difficulty:  Green Mine Leaf – Easy to identify, generally the leaf mine is distinctive and unlikely to be confused with other species.
Mine Type/s:  Gallery
Mine Feeding Method/s: Not Recorded
Mine Comment: An early summer mine – The tenanted mine is predominantly found in June and early July but rarely in October. A long linear gallery mine, filled with cloudy greenish frass for the first part, then changing suddenly to a narrow central band of black-brown frass with obvious clear margins. 
Moth Activity: Diurnal   – but can be disturbed during the day Photographed: Yes –  Photographed By: Dave Evans; Christian Heintzen  © All Rights Reserved
*** Last updated on 12 December 2025 by TD ***
Wingspan: 5-7mm
Food Plant: Birch
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Glossop, Gnat Hole

Selected Images:  

Dave Evans – September 2024 / August 2022 – Wyver Lane, Belper/ Glossop 28/8/2025 – Christian Heintzen©

 
 


Occurrence Distribution From All Available Data (Adult & Immature)
(click legend below to show/hide datasets)

Distribution Map for Stigmella lapponica

Found 17 records
    ↳ from 2026+
    ↳ 6 from 2020 - 2025
    ↳ 11 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Mining
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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Bedrock Geology ** indirectly affects moth distribution by influencing the type of habitat and food plants available in an area. In turn, this may affect the types of moths that can thrive, or where they can most likely be found.


NBN Atlas UK Distribution for – Stigmella lapponica

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Note – the NBN Atlas datasets are listed in the map below and vary in their currency (uptodateness) – however, the map does give a general indication of the moth's distribution across the UK.

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Monthly Records By Year: Stigmella lapponica
( data includes both Larvae and Adult Stages )
No data returned from the database.

Monthly Counts By Year: Stigmella lapponica
( data is based on 'Adult' stage records only. )


First/Last Recorded Dates: Stigmella lapponica
Adult-only & Anything [Larvae, Pupae, Adult, Mines]

Shading shows moth presence between dates

Click the colour discs below to Select/De-select as Required

Recordings By Year: Stigmella lapponica
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella lapponica
AGR: 3.44%   |   Total % Change: 125%

Hectad (10kmx10km) Coverage: Stigmella lapponica
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Stigmella lapponica

Flight Period chart – the grey hatched area above, which can cross one or more months, pictorially represents the best guess we have for this moth's flight periods [month/s]. The coloured lines represent the actual months seen in flight, from site observation records received between 2020-2026.

Mine Periods – Indicative –vs– Recorded Data
Stigmella lapponica
( data includes both Larvae and Adult Stages )

Mine Period chart – the grey hatched area above, which can cross one or more months, pictorially represents the best guess we have for this moth's mine periods [month/s]. The coloured lines represent the actual months seen mining, from site observation records received between 2020-2026.

Records Behind the Map and Charts - Stigmella lapponica – 17 records available

Listed by Year - descending - scroll across to see all table columns

Site NameTetradDateCountStageSource
Glossop, Gnat HoleSK09G28/08/20252Leaf-minevc57_irecords_extract
DWT Wyver LaneSK34P13/08/20252mine (empty)vc57_irecords_extract
DWT Wyver LaneSK34P06/08/20253mine (empty)vc57_irecords_extract
DWT Wyver LaneSK34P23/07/20252mine (empty)vc57_irecords_extract
DWT Wyver LaneSK34P12/09/20244mine (empty)vc57_irecords_extract
DWT Wyver LaneSK34P04/09/20245mine (empty)vc57_irecords_extract
Millers DaleSK17G03/09/20111Larval Minevc57_danes_bc_data
Ladybower ResrSK18U03/09/20101Larval Minevc57_danes_bc_data
Slippery Stones,Upper DerwentSK19S25/08/20101Larval Minevc57_danes_bc_data
Howden ResrSK19L25/08/20101Larval Minevc57_danes_bc_data
Padley Gorge, Nether PadleySK27P19/08/20101Larval Minevc57_danes_bc_data
Foremark Resr (sailing club area), TicknallSK32H02/10/20091Larval Minevc57_danes_bc_data
Shallcross Wood, Goyt Valley, Whaley BridgeSK07E26/09/20061Larval Minevc57_danes_bc_data
Ogston Carr Wood,nr Ogston ResSK35U12/07/20061Larval Minevc57_danes_bc_data
Clattercotes Wood, nr Ogston ResrSK36Q12/07/20061Larval Minevc57_danes_bc_data
Brackley Gate, nr CoxbenchSK34W03/11/20011Larval Minevc57_danes_bc_data
Cubley, nr AshbourneSK13U04/10/20011Larval Minevc57_danes_bc_data

 
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