70.097X  –  Geometridae –  Larrentiinae – Dysstroma truncata/citrata – Common/Dark Marbled Carpet Adult Macro:  CAT 2 – Can be confused with other species – Can be confused with other species       PDF Icon – click for Adult Macro Verification Guidelines

Blue –  Generally Common / Widespread   
Taxonomy:   Macro   >>  Geometridae  >> Larrentiinae
** This page is to record aggregated records only – see individual species pages for additional information **
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Dark Marbled Carpet – Dysstroma citrata; Common Marbled Carpet – Dysstroma truncata
ID pointers: There are subtle differences which are based on the shape of the postmedian line on the underwing, which is more angular in D.citrata. See separate species pages for more detials.
Distribution:  For further details see separate species – Both are widespread and common across the recording area
Flight Period: July /  August /  Moth Activity: Nocturnal   – and is attracted to light Photographed: No –  Photographed By: Not Recorded
*** Last updated on 2 October 2025 by RP ***
Wingspan: 14-19mm
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.

Selected Images:  



Distribution Map for Dysstroma truncata/citrata

Found 25 records
    ↳ 0 from After 2025
    ↳ 3 from 2020 - 2024
    ↳ 22 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 - No LSID found for: Dysstroma truncata/citrata
This moth may be an aggregate and as such no specific records of distribution exist.


Monthly Records By Year: Dysstroma truncata/citrata
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Dysstroma truncata/citrata
( data is based on 'Adult' stage records only. )


First/Last Recorded Dates: Dysstroma truncata/citrata
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: Dysstroma truncata/citrata
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Dysstroma truncata/citrata
AGR: -5.88%   |   Total % Change: -45.5%


CUSUM Analysis: Dysstroma truncata/citrata
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 18 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 2017, 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: Dysstroma truncata/citrata
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Dysstroma truncata/citrata
( 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 - Dysstroma truncata/citrata – 25 records available

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

Site NameTetradDateCountStageSource
Allestree, Derby, Elm GroveSK34K16/06/20231adultvc57_irecords_extract
Jim Mart Nature ReserveSK36S24/09/20221Adultvc57_irecords_extract
Jim Mart Nature ReserveSK36S14/08/20221Adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z07/09/20181adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z22/06/20181adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z08/09/20171adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z16/06/20172adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z26/05/20172adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z13/09/20163adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z03/07/20161Adultvc57_irecords_extract
Jim Mart Nature ReserveSK36S06/09/20151Adultvc57_irecords_extract
Jim Mart Nature ReserveSK36S10/09/20151Adultvc57_irecords_extract
Shirland-Hallfieldgate LaneSK35Z01/09/20151Adultvc57_irecords_extract
Shirland-Hallfieldgate LaneSK35Z08/09/20151Adultvc57_irecords_extract
Shirland-Hallfieldgate LaneSK35Z19/09/20152Adultvc57_irecords_extract
Shirland-Hallfieldgate LaneSK35Z24/09/20151Adultvc57_irecords_extract
Jim Mart Nature ReserveSK36S16/06/20151Adultvc57_irecords_extract
Shirland-Hallfieldgate LaneSK35Z23/06/20151Adultvc57_irecords_extract
Stretton Handley School - Beresford LnSK36Q18/09/20142Adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z06/10/20135Adultvc57_irecords_extract
Stretton Handley School - Beresford LnSK36Q22/09/20131Adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z02/09/20131Adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z07/09/20131Adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z21/09/20131Adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z28/09/20132Adultvc57_irecords_extract

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