49.321 BF1273  –  Tortricidae –  Olethreutinae – Dichrorampha petiverella – Yellow-spot Yarrow Moth – (Linnaeus, 1758) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Green –  Rare / Uncommon / Scarce   
Taxonomy:   Micro   >>  Tortricidae  >> Olethreutinae
Other Name/s: Common Drill
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Forewing dark brown with a pale yellowish blotch slightly curved from the dorsum to the mid-wing. Dense yellowish-brown speckling.
Distribution:  (Last record: 9 June 2022 at Markham Vale South Tip )  –  With only four records since 2008, would suggest that this is not a common species in Derbyshire. Last recorded in 2022.
Flight Period: June /  July /  August /  –  On the wing during June – August. Moth Activity: Nocturnal  Crepuscular   – active in afternoon and evening sunshine and occasionally comes to light Photographed: Yes –  Photographed By: Will Soar  © All Rights Reserved
*** Last updated on 9 September 2025 by TD ***
Wingspan: 10-13mm
Food Plant: Yarrow or Tansy.
Last Recorded Year: 2022
Last Recorded By – Sid Morris
Last Recorded General Area – Markham Vale South Tip

IMAGES BELOW:  Kings Newton, Derbyshire – Will Soar©

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Distribution Map for Dichrorampha petiverella

Found 4 records
    ↳ 0 from After 2025
    ↳ 1 from 2020 - 2024
    ↳ 3 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 – Dichrorampha petiverella

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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.

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Monthly Records By Year: Dichrorampha petiverella
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Dichrorampha petiverella
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 22 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 2012, reaching above average levels. The lowest population point occurred near 2008, 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: Dichrorampha petiverella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Dichrorampha petiverella
( 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 - Dichrorampha petiverella – 4 records available

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

TaxonSite NameTetradYearDateCountStageSource
Dichrorampha petiverellaMarkham Vale South TipSK47K202209/06/20221adultvc57_irecords_extract
Dichrorampha petiverellaMillennium Meadow NR, DuffieldSK34L201320/07/20131Adultvc57_danes_bc_data
Dichrorampha petiverellaRobin Wood (entrance track), TicknallSK32S201208/08/20122Adultvc57_danes_bc_data
Dichrorampha petiverellaMain Street, Kings NewtonSK32Y200810/08/20081Adultvc57_irecords_extract

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