17.011 BF461  –  Ypsolophidae –  Ypsolophinae – Ypsolopha ustella – Varied Ochre – (Clerck, 1759) 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   >>  Ypsolophidae  >> Ypsolophinae
** Identification write up required **
Other Name/s: Variable Smudge
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Ypsolopha parenthesella (White-shouldered Ochre)
Distribution:  (Last record: 27 July 2025 at Kings Newton )  –  Appears to be an uncommon species – Harrison & Sterling listed records from 1953-1957; DaNES shows 7 records between 1994-2012 & iRecord shows 14 records between 2005 – 2025
Flight Period: January /  February /  March /  April /  August /  September /  October /  November /  December /  –  August through to following April – over winters and can fly during all months of this period. Moth Activity: Cathemeral  Photographed: Yes –  Photographed By: Dave Evans; Stephen Plant; Tony Davison  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 15-20mm
Food Plant: Oak
Last Recorded Year: 2025
Last Recorded By – Will Soar
Last Recorded General Area – Kings Newton

Selected Images:  

Allestree – Feb 2024 -Stephen Plant© / Belper (July 2024) Dave Evans© / Kings Newton (July 2025) Tony Davison©



Distribution Map for Ypsolopha ustella

Found 31 records
    ↳ 9 from After 2025
    ↳ 13 from 2020 - 2024
    ↳ 9 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 – Ypsolopha ustella

⚠️ 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: Ypsolopha ustella
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Ypsolopha ustella
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 15 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 2010, reaching above average levels. The lowest population point occurred near 2023, 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: Ypsolopha ustella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Ypsolopha ustella
( 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 - Ypsolopha ustella – 31 records available

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

Site NameTetradDateCountStageSource
BuxtonSK07R15/08/20251adultvc57_irecords_extract
Darwin ForestSK26X05/07/20251adultvc57_irecords_extract
BelperSK34U18/07/20251adultvc57_irecords_extract
Midway, Derbys.SK32A16/06/20251adultvc57_irecords_extract
Inkersall gardenSK47G28/06/20251adultvc57_irecords_extract
Markham Vale DerbyshireSK47L20/03/20251adultvc57_irecords_extract
Ilkeston, DerbyshireSK44K07/03/20251adultvc57_irecords_extract
Markham Vale DerbyshireSK47K31/03/20251adultvc57_irecords_extract
Havercroft RoadSK38L22/02/20251Adultvc57_irecords_extract
BelperSK34U21/07/20241adultvc57_irecords_extract
Wyver Lane, Belper.SK34P05/03/20241adultvc57_irecords_extract
Glossop, Shire Hill, southSK09M01/02/20243adultvc57_irecords_extract
Norton Lees, Sheffield (VC)SK38L03/02/20241adultvc57_irecords_extract
Florence road, SheffieldSK38L15/02/20242adultvc57_irecords_extract
Allestree, DerbySK33P19/02/20241adultvc57_irecords_extract
Longdendale, Wildboar CloughSK09U28/01/20241adultvc57_irecords_extract
Buxton SK, UKSK07R31/08/20231Adultvc57_irecords_extract
Glossop, Gnat Hole Rough FieldsSK09L08/08/20231adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F03/02/20231adultvc57_irecords_extract
Allestree ParkSK34K25/09/20221adultvc57_irecords_extract
Woodland AveSK43R19/07/20221Adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K16/03/20211adultvc57_irecords_extract
Havercroft RoadSK38L16/09/20181Adultvc57_irecords_extract
School Close,Parkway Gardens,Darley DaleSK26R23/02/20121Adultvc57_danes_bc_data
Crich Chase,AmbergateSK35L11/06/20111Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R12/01/20111Adultvc57_danes_bc_data
Padley Gorge, Nether PadleySK27P19/08/20102Adultvc57_danes_bc_data
Flash Lane,Beeley MoorSK26X05/08/20061Adultvc57_danes_bc_data
Main Street, Kings NewtonSK32Y11/07/20051Adultvc57_irecords_extract
Calke Park (Poker's Leys), TicknallSK32L13/02/19983Adultvc57_danes_bc_data
Linacre Resr (north side) (site not precise)SK37G20/08/19941Adultvc57_danes_bc_data

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