49.022 BF1000  –  Tortricidae –  Tortricinae – Ptycholoma lecheana – Brindled Tortrix – (Linnaeus, 1758) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Brown –  Significant Record / Very Rare / Vagrant         day-flying – Day-flying
Taxonomy:   Micro   >>  Tortricidae  >> Tortricinae
Other Name/s: Brindled Twist
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Quite distinctive. Dark brown forewing, variably suffused with yellow, greenish-yellow, reddish-brown. Patches of metallic silver.
Distribution:  (Last record: 11 July 2025 at Belper )  –  With only six records from five sites across the recording area this species is rare and a significant record.
Flight Period: May /  June /  July /  –  On the wing during May-July. Moth Activity: Diurnal  Crepuscular   – active in afternoon and evening sunshine and occasionally comes to light Photographed: Yes –  Photographed By: Peter Stoppard; Will Soar; Pete Mella  © All Rights Reserved
*** Last updated on 29 July 2025 by TD ***
Wingspan: 16-20mm
Food Plant: Various trees and shrubs.
Last Recorded Year: 2025
Last Recorded By – Dave Evans
Last Recorded General Area – Belper

IMAGES BELOW:  

Linacre – Peter Stoppard© / Kings Newton (2017) – Will Soar©/ Gleadless Valley (2025) Pete Mella©

Distribution Map for Ptycholoma lecheana

Found 11 records
    ↳ 4 from After 2025
    ↳ 3 from 2020 - 2024
    ↳ 4 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 – Ptycholoma lecheana

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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: Ptycholoma lecheana
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Ptycholoma lecheana
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 19 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 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: Ptycholoma lecheana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Ptycholoma lecheana
( 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 - Ptycholoma lecheana – 11 records available

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

TaxonSite NameTetradYearDateCountStageSource
Ptycholoma lecheanaBelperSK34U202511/07/20251adultvc57_irecords_extract
Ptycholoma lecheanaAllestree, DerbySK33P202520/05/20251adultvc57_irecords_extract
Ptycholoma lecheanaDrakelow N.R.SK22F202520/05/20251adultvc57_irecords_extract
Ptycholoma lecheanaGleadless Valley LNRSK38R202527/05/20251adultvc57_irecords_extract
Ptycholoma lecheanaSheffield, UKSK28V202418/06/20241Adultvc57_irecords_extract
Ptycholoma lecheanaWoodland AveSK43R202217/06/20221Adultvc57_irecords_extract
Ptycholoma lecheanaBelperSK34U202117/06/20211adultvc57_irecords_extract
Ptycholoma lecheanaAllestree, DerbySK34K201906/06/20191adultvc57_irecords_extract
Ptycholoma lecheanaAllestree, DerbySK34K201906/06/20191adultvc57_irecords_extract
Ptycholoma lecheanaMain Street, Kings NewtonSK32Y201731/05/20171Adultvc57_irecords_extract
Ptycholoma lecheanaAshover, DerbyshireSK36L201424/06/20141adultvc57_irecords_extract

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