Swammerdamia caesiella       Paraswammerdamia albicapitella
16.017 BF438  –  Yponomeutidae –  Yponomeutinae – Swammerdamia pyrella – Copper-fringed Drab – (Villers, 1789) Adult Micro:  CAT 2 – Confusion Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Green –  Rare / Uncommon / Scarce   
Taxonomy:   Micro   >>  Yponomeutidae  >> Yponomeutinae
Other Name/s: Little Ermine
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Several related species are very similar
ID pointers: A rufous tinge to the wing tip helps distinguish this from all others in the group. A whitish head, thorax dark grey and forewing grey with a darker grey cross-band just over half way. A scattering of blackish scale and a small white spot on the costa towards the wing tip all help with the ID process.
Distribution:  (Last record: 2 June 2020 at Findern )  –  Would suggest that this species is localised and widespread but not common. Maybe under recorded. Nationally it is classed as a common species
Flight Period: May /  June /  July /  August /  –  Two generations – May-June & July-August Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 10-13mm
 Food Plant: Hawthorn & Apple
Last Recorded Year: 2020
Last Recorded By – Brian & Jean Hallam
Last Recorded General Area – Findern
Selected Images:  Melbourne, Derbyshire – Tony Davison ©

Swammerdamia pyrella – Copper-fringed Drab – Tony Davison

 
 

Image Gallery

16.017 BF438 Swammerdamia pyrella - Melbourne, Derbyshire - July 2016 Tony Davison©

 

Distribution Map for Swammerdamia pyrella

Found 47 records
    ↳ 0 from After 2025
    ↳ 8 from 2020 - 2024
    ↳ 39 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

If the Map Layers function fails, just refresh the page and it should be OK after. Use the +- zoom on the top left, or on a tablet, use two fingers to zoom. Remember, the last layer you ticked is the one which displays the popup information - they sit on top of each other - de-select then re-select, to see the popup values.

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 – Swammerdamia pyrella

⚠️ Please wait for the map to load fully – do not click the link shown.


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.

Visit NBN Site


Monthly Records By Year: Swammerdamia pyrella
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Swammerdamia pyrella
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: Swammerdamia pyrella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Swammerdamia pyrella
AGR: 0%   |   Total % Change: 0%


CUSUM Analysis: Swammerdamia pyrella
About this chart: CUSUM (Cumulative Sum) charts track long-term trends in moth populations [ filtered by 'Adult' and 'Mine' life stages ] by showing whether each year’s counts are above or below the historical average. Even small shifts build up over time, making trends of growth, stability, or decline easier to see. CUSUM highlights trend-consistency — asking: “Across the years, have moth counts mostly stayed above or below average?”
The data sample has 13 gap year/s here (zero records) between 2000 and 2025. The moth may have been present in those gap years, but no data was available. Too many year-gaps may exaggerate or skew the chart.

Counts for the current year (2025) are pro-rated based on data available up to month 8 (August) to provide a full-year equivalent.

ⓘ Purple line rises = years better than average; falls = years worse than average.
Peak (best year) Trough (worst year) Growth periods Decline periods
Population peaked around 2013, reaching above average levels. The lowest population point occurred near 2004, showing a significant decline.

What the Y-axis "Cumulative Deviation" means: Cumulative Deviation shows the running total of how each year’s moth population count differs from the long-term average. i

Hectad (10kmx10km) Coverage: Swammerdamia pyrella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Swammerdamia pyrella
( data includes Adult Stage only )

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 2020-2025.

Records Behind the Map and Charts - Swammerdamia pyrella – 47 records available

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

Site NameTetradDateCountStageSource
Allestree, DerbySK33P27/06/20241adultvc57_irecords_extract
Melbourne, DerbyshireSK32X11/08/20231adultvc57_irecords_extract
Melbourne, DerbyshireSK32X11/08/20231adultvc57_irecords_extract
Staveley DerbyshireSK47H17/07/20221adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F10/07/20221adultvc57_irecords_extract
Main Street, Kings NewtonSK32Y14/08/20201Adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A20/06/20201adultvc57_irecords_extract
Woodland AveSK43R25/05/20201adultvc57_irecords_extract
Main Street, Kings NewtonSK32Y15/07/20191Adultvc57_irecords_extract
Main Street, Kings NewtonSK32Y19/07/20181Adultvc57_irecords_extract
Main Street, Kings NewtonSK32Y17/07/20181Adultvc57_irecords_extract
Main Street, Kings NewtonSK32Y18/07/20183Adultvc57_irecords_extract
Wood Lane,Newhall,SwadlincoteSK22V12/08/20161Adultvc57_danes_bc_data
Main Street, Kings NewtonSK32Y20/07/20161Adultvc57_irecords_extract
Main Street, Kings NewtonSK32Y18/07/20162Adultvc57_irecords_extract
Main St, King's Newton, MelbourneSK32Y18/07/20161Adultvc57_danes_bc_data
Shirland-Hallfieldgate LaneSK35Z16/08/20151Adultvc57_irecords_extract
Backgarden MarehaySK34Z08/08/20132adultvc57_irecords_extract
Backgarden MarehaySK34Z06/07/20131adultvc57_irecords_extract
Backgarden MarehaySK34Z09/07/20132adultvc57_irecords_extract
Backgarden MarehaySK34Z14/07/20132adultvc57_irecords_extract
Backgarden MarehaySK34Z19/07/20137adultvc57_irecords_extract
Backgarden MarehaySK34Z23/07/20139adultvc57_irecords_extract
Backgarden MarehaySK34Z26/07/201313adultvc57_irecords_extract
Backgarden MarehaySK34Z30/07/20131adultvc57_irecords_extract
Backgarden MarehaySK34Z30/07/20131adultvc57_irecords_extract
Longstone Edge,Great LongstoneSK17W18/06/20121Adultvc57_danes_bc_data
Backgarden MarehaySK34Z03/07/201112adultvc57_irecords_extract
Backgarden MarehaySK34Z07/07/20113adultvc57_irecords_extract
Backgarden MarehaySK34Z09/07/20111adultvc57_irecords_extract
Backgarden MarehaySK34Z11/07/20112adultvc57_irecords_extract
Backgarden MarehaySK34Z19/07/20113adultvc57_irecords_extract
Backgarden MarehaySK34Z23/07/20111adultvc57_irecords_extract
Bamford St,RipleySK34Z07/07/20113Adultvc57_danes_bc_data
Bamford St,RipleySK34Z19/07/20113Adultvc57_danes_bc_data
Bamford St,RipleySK34Z03/07/201112Adultvc57_danes_bc_data
Bamford St,RipleySK34Z23/07/20111Adultvc57_danes_bc_data
Bamford St,RipleySK34Z09/07/20111Adultvc57_danes_bc_data
Bamford St,RipleySK34Z11/07/20112Adultvc57_danes_bc_data
Backgarden MarehaySK34Z15/06/20111adultvc57_irecords_extract
Backgarden MarehaySK34Z25/06/20114adultvc57_irecords_extract
Backgarden MarehaySK34Z27/06/20112adultvc57_irecords_extract
Bamford St,RipleySK34Z25/06/20114Adultvc57_danes_bc_data
Foremark Resr, TicknallSK32H09/07/20054Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V19/07/20041Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V21/07/20041Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V29/07/20041Adultvc57_danes_bc_data

 
Swammerdamia caesiella       Paraswammerdamia albicapitella

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