70.048 BF1723  –  Geometridae –  Larentiinae – Xanthorhoe decoloraria – Red Carpet – (Esper, 1806) Adult Macro:  CAT 2 – Can be confused with other species – Can be confused with other species       PDF Icon – click for Adult Macro Verification Guidelines

Green –  Rare / Uncommon / Scarce   
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: Rather pointed forewings which vary in colour from light grey to tawny brown. The central band is pinched in or narrows at the trailing half. Usually reddish with black borders.
Distribution:  (Last record: 19 July 2025 at Glossop )  –  A resident that is uncommon and confined to the highest altitudes of the Peak Grit  area of Derbyshire. Favours high moorland and grassy hillsides with exposed rock.
Flight Period: June /  July /  August /  –  June-August – One generation Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Rowan Wakefield, Christian Heintzen  © All Rights Reserved
*** Last updated on 26 July 2025 by TD ***
Wingspan: 32mm
Forewing: 12-15mm
Food Plant: Lady’s Mantle Alchemilla spp. and other low plants.
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Glossop

IMAGES BELOW:  Photo by kind permission of Rowan Wakefield © – Buxton – 01/08/2022 / Glossop July 2025 – Christian Heintzen©

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Distribution Map for Xanthorhoe decoloraria

Found 21 records
    ↳ 1 from After 2025
    ↳ 0 from 2020 - 2024
    ↳ 20 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 – Xanthorhoe decoloraria

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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: Xanthorhoe decoloraria
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Xanthorhoe decoloraria
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: Xanthorhoe decoloraria
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Xanthorhoe decoloraria
AGR: -2.76%   |   Total % Change: -28.6%


CUSUM Analysis: Xanthorhoe decoloraria
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 23 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 2025, reaching above average levels. The lowest population point occurred near 2013, 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: Xanthorhoe decoloraria
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Xanthorhoe decoloraria
( 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 - Xanthorhoe decoloraria – 21 records available

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

TaxonSite NameTetradYearDateCountStageSource
Xanthorhoe decolorariaCown Edge Farm unimproved grassland and willow carrSK09A202519/07/20251adultvc57_irecords_extract
Xanthorhoe decolorariaLadycroft AveSK07S201629/07/20162adultvc57_irecords_extract
Xanthorhoe decolorariaMacclesfield Rd, Whaley BridgeSK08A201303/08/20131Adultvc57_danes_bc_data
Xanthorhoe decolorariaArbor Grove, BuxtonSK07L201306/07/20131Adultvc57_danes_bc_data
Xanthorhoe decolorariaArbor Grove, BuxtonSK07L201314/07/20132Adultvc57_danes_bc_data
Xanthorhoe decolorariaArbor Grove, BuxtonSK07L201320/07/20132Adultvc57_danes_bc_data
Xanthorhoe decolorariaArbor Grove, BuxtonSK07L201328/06/20131Adultvc57_danes_bc_data
Xanthorhoe decolorariaWoodlands, Combs, Chapel en le FrithSK07P199218/07/19921Adultvc57_danes_bc_data
Xanthorhoe decolorariaWoodlands, Combs, Chapel en le FrithSK07P199115/08/19911Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198010/08/19801Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198014/08/19801Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198009/08/19802Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198013/08/19801Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198017/08/19801Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198028/07/19801Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X198024/07/19802Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X197926/07/19791Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X197929/07/19791Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X197810/08/19781Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X197814/08/19781Adultvc57_danes_bc_data
Xanthorhoe decolorariaUpper Booth, EdaleSK08X197709/08/19771Adultvc57_danes_bc_data

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