49.264 BF1202  –  Tortricidae –  Olethreutinae – Eucosma obumbratana – Shaded Tortrix – (Lienig & Zeller, 1846) Adult Micro:  CAT 2 – Can be confused with other species –       Leaf-miner:  CAT A – Recorded accepted without the leaf or a photo –       Larval Case:  C1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data   
Taxonomy:   Micro   >>  Tortricidae  >> Olethreutinae
Other Name/s: Two-coloured Bell
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Eucosma hohenwartiana
ID pointers: Male forewing yellowish brown in the dorsal third and brown to reddish-brown over rest of wing. The ocellus is pale, usually containing two or three long black dashes, often broken. The females forewing is pale and unicolorous with a pale ocellus.
Distribution:  (Last record: 5 July 2025 at Heage )  –  A relatively uncommon species in Britain. The Derbyshire status is Uncertain due to insufficient data – The moth maybe local on Sow Thistle – Very few modern day records.
General Comment: None
Flight Period: July /  August –  On the wing mid July-August. Moth Activity: Nocturnal  Crepuscular   – and is attracted to light Photographed: Yes –  Photographed By: Dave Evans, Brian Hallam  © All Rights Reserved
*** Last updated on 5 November 2025 by RP ***
Wingspan: 14-20mm
Food Plant: Sow-thistle (Sonchus arvensis).
Last Recorded Year: 2025
Last Recorded By – Marion Bryce
Last Recorded General Area – Heage

Selected Images: Belper 25/6/2025 Dave Evans© / Findern 21/7/2023 Brian Hallam



Distribution Map for Eucosma obumbratana

Found 7 records
    ↳ from 2026+
    ↳ 6 from 2020 - 2025
    ↳ 1 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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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 – Eucosma obumbratana

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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: Eucosma obumbratana
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Eucosma obumbratana
Adult-only & Anything [Larvae, Pupae, Adult, Mines]

Shading shows moth presence between dates

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Recordings By Year: Eucosma obumbratana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Eucosma obumbratana
AGR: 0%   |   Total % Change: 0%

Hectad (10kmx10km) Coverage: Eucosma obumbratana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Eucosma obumbratana
( 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 2020-2026.

Records Behind the Map and Charts - Eucosma obumbratana – 7 records available

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

Site NameTetradDateCountStageSource
Heage, Common FarmSK35K05/07/20251adultvc57_irecords_extract
Drakelow, Derbys.SK22F28/06/20251adultvc57_irecords_extract
DWT Wyver LaneSK34P25/06/20251adultvc57_irecords_extract
SandiacreSK43S01/08/20241adultvc57_irecords_extract
Markham Vale DerbyshireSK47L25/07/20241adultvc57_irecords_extract
Findern GardenSK33A21/07/20231Adultvc57_irecords_extract
Acton Rd Ind Est, Long EatonSK43W19/07/19951Adultvc57_danes_bc_data

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