73.313 BF2081  –  Noctuidae –  Noctuinae – Euxoa tritici – White-line Dart – (Linnaeus, 1761) Adult Macro:  CAT 3 – Difficult to identify/Very rare/Scarce species (includes very scarce adventives/immigrants)/County-level first records – images or specimen may be required – Difficult to identify /Very rare/Scarce (includes very scarce adventives/immigrants)/County-level first records       PDF Icon – click for Adult Macro Verification Guidelines

Brown –  Significant Record / Very Rare / Vagrant    
Taxonomy:   Macro   >>  Noctuidae  >> Noctuinae
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Square-spot Dart (E.obelisca) and Coast Dart (E.cursoria).
ID pointers: Extremely variable in colour and intensity of markings. Up to six short arrow heads towards outer edge. Often shows a white or pale yellowish streak running towards apex and alongside costa with another running through centre both forming a large arrow-head.
Distribution:  (Last record: 8 September 2021 at Kings Newton )  –  Scarce and locally distributed species in Derbyshire. Up to 1986 only around 20 individuals had been recorded in the county. Only one other record reported from Kings Newton 8/9/2021. A specimen was recorded on 27th July 2022 from Newhall which could potentially have been this species. Unfortunately the photograph supplied was not of good enough quality to put the record beyond any doubt. It was sent to several experts in their field on Square-spot Dart & White-line Dart and only a 90% probability of it being a Square-spot Dart could be given. Therefore the record has to be accepted as an aggregate, with a probability of Square-spot Dart.
Flight Period: July /  August /  –  On the wing July – August  Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Will Soar  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 28-40mm
Forewing: 13-17mm
Food Plant: Low plants.
Last Recorded Year: 2021
Last Recorded By – Will Soar
Last Recorded General Area – Kings Newton

Selected Images:  Kings Newton, Derbyshire – 8/9/2021 – Will Soar© / Newhall, Derbyshire 27/7/2022 – Keith Peach (90% probability of Square-spot Dart)



Distribution Map for Euxoa tritici

Found 31 records
    ↳ 0 from After 2025
    ↳ 1 from 2020 - 2024
    ↳ 30 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 – Euxoa tritici

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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: Euxoa tritici
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Euxoa tritici
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 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 2003, reaching above average levels. The lowest population point occurred near 2003, 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: Euxoa tritici
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Euxoa tritici
( 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 - Euxoa tritici – 31 records available

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

Site NameTetradDateCountStageSource
Main Street, Kings NewtonSK32Y08/09/20211Adultvc57_irecords_extract
Elgar Drive,Sawley,Long EatonSK43R25/07/20111Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R17/07/20031Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R17/07/20031Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R29/07/19971Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R29/07/19971Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R25/07/19941Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R14/06/19931Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R11/08/19921Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R30/07/19921Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R17/06/19881Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R11/08/19871Adultvc57_danes_bc_data
Johnnygate, Barlow, ChesterfieldSK37C01/08/19873Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R04/08/19871Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R05/08/19871Adultvc57_danes_bc_data
Johnnygate, Barlow, ChesterfieldSK37C01/08/19873Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R08/08/19851Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R26/08/19851Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R26/08/19851Adultvc57_danes_bc_data
Wilmot St, Sawley, Long EatonSK43R08/08/19851Adultvc57_danes_bc_data
Welbeck Rd, BolsoverSK47V03/08/19691Adultvc57_danes_bc_data
Berry St, Hepthorne Lane, North WingfieldSK46C14/08/19681Adultvc57_danes_bc_data
Repton (site not precise)SK32B13/07/19571Adultvc57_danes_bc_data
Repton (site not precise)SK32B13/07/19571Adultvc57_danes_bc_data
Dovedale, Bunster Hill (site not precise)SK15K01/01/19303Larvaevc57_danes_bc_data
Bretby area, Swadlincote (site not precise)SK22W01/01/18851Adultvc57_danes_bc_data
Barrow on Trent, Derby (site not precise)SK32P01/01/18851Adultvc57_danes_bc_data
Bretby area, Swadlincote (site not precise)SK22W01/01/18851Adultvc57_danes_bc_data
Barrow on Trent, Derby (site not precise)SK32P01/01/18851Adultvc57_danes_bc_data
Repton (site not precise)SK32B01/01/18781Adultvc57_danes_bc_data
Repton (site not precise)SK32B01/01/18001Adultvc57_danes_bc_data

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