Willow Beauty       Mottled Beauty
70.264 BF1940  –  Geometridae –  Larentiinae – Deileptenia ribeata – Satin Beauty – (Clerck, 1759) Adult Macro:  CAT 2 – Can be confused with other species – Can be confused with other species       PDF Icon – click for Adult Macro Verification Guidelines
Brown –  Significant Record / Very Rare / Vagrant    
Taxonomy:   Macro   >>  Geometridae  >> Larentiinae
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
ID pointers: Distinguished from all similar species by the broad and rounded forewing and the faint scalloping on both the fringes for the forewing and hind-wing.
Distribution:  (Last record: 30 June 2025 at Darwin Forest, Matlock )  –  Very rare and few records in a year. Last recorded in Derbyshire in 2023 – In 1986 it was thought to be extinct in Derbyshire, but since then there were a number of records in the 1990’s. and it continues to be recorded in small numbers each year. One trapped in Grinlow Woods, Buxton on 10th July 2021. Latest records of 4 in 2023, a daytime observation, in a small plantation at Fernilee Reservoir, a specimen trapped in a garden trap at Cromford and 2 recorded from a garden on 2 seperate dates from Buxton. One from Darwin Forest, Matlock 30/6/2025. Remains a rare species in the county.
Flight Period: June /  July /  August /  –  June- August – one generation Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Rowan Wakefield, Dave Evans  © All Rights Reserved
*** Last updated on 26 July 2025 by TD ***
Wingspan: 30-40mm
Forewing: 18-26mm Food Plant: Yew (Taxus baccata) and Spruce (Picea).
Last Recorded Year: 2025
Last Recorded By – Dave Evans
Last Recorded General Area – Darwin Forest, Matlock
IMAGES BELOW:  Photo by kind permission of ©Rowan Wakefield©  – Grinlow Woods, Buxton 10/07/2021 / Darwin Forest 30/6/2025 – Dave Evans©

70.264 BF1940 - Satin Beauty - Geometridae - Deileptenia ribeata
Satin Beauty – Deileptenia ribeata – Rowan Wakefield
Satin Beauty - 30th June 2025 - Darwin Forest, Dave Evans
Satin Beauty – 30th June 2025 – Darwin Forest, Dave Evans
70.264 BF1940 - Satin Beauty - Geometridae - Deileptenia ribeata
Satin Beauty - 30th June 2025 - Darwin Forest, Dave Evans

Satin Beauty - 30th June 2025 - Darwin Forest, Dave Evans Satin Beauty - 30th June 2025 - Darwin Forest, Dave Evans

Distribution Map for Deileptenia ribeata

Found 38 records
    ↳ 6 from After 2025
    ↳ 9 from 2020 - 2024
    ↳ 23 from Before 2020

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.

******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******

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.

Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.


NBN Atlas UK Distribution for – Deileptenia ribeata

⚠️ 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: Deileptenia ribeata
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Deileptenia ribeata
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: Deileptenia ribeata
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Deileptenia ribeata
AGR: 5.9%   |   Total % Change: 233.3%


CUSUM Analysis: Deileptenia ribeata
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 7 (July) 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 2006, reaching above average levels. The lowest population point occurred near 2024, 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: Deileptenia ribeata
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Deileptenia ribeata
( 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 - Deileptenia ribeata – 38 records available

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

TaxonSite NameTetradYearDateCountStageSource
Deileptenia ribeataDarwin ForestSK26X202502/07/20251adultvc57_irecords_extract
Deileptenia ribeataDarwin ForestSK26X202503/07/20256adultvc57_irecords_extract
Deileptenia ribeataDarwin ForestSK26X202504/07/20254adultvc57_irecords_extract
Deileptenia ribeataDarwin ForestSK26X202505/07/20254adultvc57_irecords_extract
Deileptenia ribeataDarwin ForestSK26X202506/07/20252adultvc57_irecords_extract
Deileptenia ribeataDarwin ForestSK26X202530/06/20253adultvc57_irecords_extract
Deileptenia ribeataHathersageSK28F202419/07/20241adultvc57_irecords_extract
Deileptenia ribeataGarden, WaltonSK36U202427/06/20241adultvc57_irecords_extract
Deileptenia ribeataLower Cromford GardenSK25Y202324/07/20231adultvc57_irecords_extract
Deileptenia ribeataLadycroft Ave, BuxtonSK07S202321/07/20231adultvc57_irecords_extract
Deileptenia ribeataLadycroft Ave, BuxtonSK07S202328/07/20231adultvc57_irecords_extract
Deileptenia ribeataChatsworthSK27K202311/07/20231adultvc57_irecords_extract
Deileptenia ribeataDerbyshire, UKSK07L202109/07/20211Adultvc57_irecords_extract
Deileptenia ribeataGrin Plantation, BuxtonSK07L202109/07/20211adultvc57_irecords_extract
Deileptenia ribeataHathersage, Derbyshire, UKSK28F202129/06/20211adultvc57_irecords_extract
Deileptenia ribeataFirestone Lane, MatlockSK36G201425/07/20142adultvc57_irecords_extract
Deileptenia ribeataRepton (The Croft garden)SK32D201106/07/20111Adultvc57_danes_bc_data
Deileptenia ribeataSchool Close,Parkway Gardens,Darley DaleSK26R201125/06/20111Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley MoorSK26X200907/08/20095Adultvc57_danes_bc_data
Deileptenia ribeataDronfield WoodhouseSK37J200926/07/20091adultvc57_irecords_extract
Deileptenia ribeataBack Lane,GlapwellSK46T200930/06/20091Adultvc57_danes_bc_data
Deileptenia ribeataBack Lane, GlapwellSK46T200930/06/20091Adultvc57_danes_bc_data
Deileptenia ribeataFar Cross,Cavendish Park,MatlockSK36A200825/07/20081Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley MoorSK26X200616/07/20067Adultvc57_danes_bc_data
Deileptenia ribeataAlport Dale, nr Ladybower ResrSK18P200518/07/20052Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley Moor (site not precise)SK26Z200413/07/20041Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley MoorSK26X199909/07/19991Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley MoorSK26X199822/05/19981Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley Moor (site not precise)SK26Z199605/08/19961Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane,Beeley MoorSK26X199605/08/199620Adultvc57_danes_bc_data
Deileptenia ribeataFlash Lane, Beeley Moor, Beeley (site not precise)SK26Z199605/08/19961Adultvc57_danes_bc_data
Deileptenia ribeataRepton (site not precise)SK32B194113/08/19411Adultvc57_danes_bc_data
Deileptenia ribeataRepton (in a belt of pines) (site not precise)SK32B193701/07/19372Adultvc57_danes_bc_data
Deileptenia ribeataRepton Shrubs, ReptonSK32B193601/07/19361Adultvc57_danes_bc_data
Deileptenia ribeataRepton Shrubs, ReptonSK32B193522/07/19356Adultvc57_danes_bc_data
Deileptenia ribeataRepton Shrubs, ReptonSK32B193310/07/19331Adultvc57_danes_bc_data
Deileptenia ribeataRepton Shrubs, ReptonSK32B193216/07/19321Adultvc57_danes_bc_data
Deileptenia ribeataRepton (The Croft garden)SK32D191106/07/19111Adultvc57_danes_bc_data

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