19.011 BF473  – Leek Moth  – Acrolepiopsis assectella  – (Zeller, 1839)
Adult Micro:  CAT 2 – Can be confused with other species –       Leaf-miner:  CAT L – The leaf or a Photo required – reared and possibly dissected      
PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Green –  Rare / Uncommon / Scarce        purple – Leaf-miner
Taxonomy:   Micro   >>  Glyphipterigidae  >> Acrolepiinae
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Similar to other Acrolepiopsis sp.
ID pointers: The forewing is a greyish brown with scattered dark brown and whitish markings. A distinct white triangular mark about half way along the folded wing and further mottling of white in the terminal area of the wing.
Distribution:  (Last record: 23 August 2024 at Ilkeston )  –  Not listed in Harrison & Sterling (1988) – A nationally local species spreading northwards. Generally widespread but uncommon and likely to be local in the county where leek, onion or chives are grown. 
General Comment: None
Flight Period: January /  February /  March /  April /  May /  June /  July /  October /  November /  December –  On the wing during most months of the year. Mine Period: Not Recorded
Mine Period Additional: None.
Mine ID Difficulty: Not Recorded
Mine Type/s: Not Recorded
Mine Feeding Method/s: Not Recorded
Mine Comment: None.
Moth Activity: Cathemeral   – and is attracted to light Photographed: Yes –  Photographed By: Brian Hallam  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 11-14mm
Food Plant: Onion, leek or garlic.
Last Recorded Year: 2024
Last Recorded By – Brian Hobby
Last Recorded General Area – Ilkeston

Selected Images:  Findern, Derbyshire – Brian Hallam ©

 
 


Temporal Distribution Chart
Adults: (between 2018 - 2025)
(click legend below to show/hide datasets)
 

Distribution Map for Acrolepiopsis assectella

Found 37 records
    ↳ from 2026+
    ↳ 35 from 2020 - 2025
    ↳ 2 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

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 – Acrolepiopsis assectella

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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.

Visit NBN Site


Monthly Records By Year: Acrolepiopsis assectella
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Acrolepiopsis assectella
( data is based on 'Adult' stage records only )

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

Hectad (10kmx10km) Coverage: Acrolepiopsis assectella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Acrolepiopsis assectella

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
Acrolepiopsis assectella
( 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 - Acrolepiopsis assectella – 37 records available

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

Site NameTetradDateCountStageRecorderSourceRecordKey
Chaddesden, DerbySK33T23/08/20251adultroome, martinvc57_irecords_extractiBRC44885966
BelperSK34N28/07/20251adultEvans, Davevc57_irecords_extractiBRC43948642
Staveley garden SYASK47H21/07/20251adultRadford, Markvc57_irecords_extractiBRC43714608
Derby DESK33I14/06/20251adultWatson, Adrianvc57_irecords_extractiBRC43638947
Midway, Derbys.SK32A20/03/20251adultWilliams, Michaelvc57_irecords_extractiBRC40484865
Findern, Derbyshire, DEAZSK33A01/09/20241adultHallam, Brianvc57_irecords_extractiBRC39935073
Ilkeston, DerbyshireSK44K23/08/20242adultHobby, Brianvc57_irecords_extractiBRC38197323
BelperSK34U12/08/20241adultEvans, Davevc57_irecords_extractiBRC37871275
Findern, Derbyshire, DEAZSK33A05/08/20241adultHallam, Brianvc57_irecords_extractiBRC39934820
Midway, Derbys.SK32A03/08/20241adultWilliams, Michaelvc57_irecords_extractiBRC39954680
BelperSK34U20/07/20241adultEvans, Davevc57_irecords_extractiBRC37244282
Findern, Derbyshire, DEAZSK33A09/07/20241adultHallam, Brianvc57_irecords_extractiBRC39934569
SandiacreSK43T13/04/20241adultMilnes, Emilyvc57_irecords_extractiBRC37895816
Ilkeston, DerbyshireSK44K11/04/20241adultHobby, Brianvc57_irecords_extractiBRC35603689
Sandiacre, DerbyshireSK43S05/04/20241adultpaul buxtonvc57_irecords_extractiBRC35327807
Mickleover gardenSK33C14/03/20241adultMaughan, Christinevc57_irecords_extractiBRC36239826
Woodland Avenue MothtrapSK43R12/03/20241adultThorpe, Stevevc57_irecords_extractiBRC35298550
SandiacreSK43T19/11/20231adultMilnes, Emilyvc57_irecords_extractiBRC34681536
Belper GardenSK34P08/09/20231adultEvans, Davevc57_irecords_extractiBRC34544606
BelperSK34U29/08/20231adultEvans, Davevc57_irecords_extractiBRC35298061
Kings Newton FieldsSK32Y03/08/20233AdultSoar, Willvc57_irecords_extractiBRC34880665
Findern GardenSK33A30/06/20231AdultHallam, Brianvc57_irecords_extractiBRC34637825
Findern, Derbyshire, DEAZSK33A05/08/20221adultBrian and Jean Hallamvc57_irecords_extractiBRC35167460
SandiacreSK43T10/06/20221adultMilnes, Emilyvc57_irecords_extractiBRC35176410
Kirk Hallam, IlkestonSK44K15/04/20221adultHobby, Brianvc57_irecords_extractiBRC41045625
Kirk Hallam, IlkestonSK44K25/03/20221adultHobby, Brianvc57_irecords_extractiBRC41045598
Woodland AveSK43R05/09/20211adultThorpe, Stevevc57_irecords_extractiBRC33499477
Findern, Derbyshire, DEAZSK33A23/06/20211adultBrian and Jean Hallamvc57_irecords_extractiBRC35164856
Main Street, Kings NewtonSK32Y03/09/20201AdultSoar, Willvc57_irecords_extractiBRC34059906
Allestree, DerbySK33P10/08/20201adultPlant, Stephenvc57_irecords_extractiBRC46320907
Woodland AveSK43R09/08/20201adultThorpe, Stevevc57_irecords_extractiBRC33502015
Main Street, Kings NewtonSK32Y07/08/20201AdultSoar, Willvc57_irecords_extractiBRC34059907
Woodland AveSK43R06/08/20202adultThorpe, Stevevc57_irecords_extractiBRC33501949
Findern, Derbyshire, DEAZSK33A24/06/20201adultBrian and Jean Hallamvc57_irecords_extractiBRC35162930
Findern, Derbyshire, DEAZSK33A10/04/20201adultBrian and Jean Hallamvc57_irecords_extractiBRC35162191
Main Street, Kings NewtonSK32Y21/03/20191AdultSoar, Willvc57_irecords_extractiBRC34059908
Main Street, Kings NewtonSK32Y19/07/20181AdultSoar, Willvc57_irecords_extractiBRC34059909

 
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