49.083 BF1044  –  Tortricidae –  Tortricinae – Acleris ferrugana – Tawny Oak Tortrix – ([Denis & Schiffermüller], 1775) Adult Micro:  CAT 4 – Dissection required – Gen-Det-Reqd       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
Blue –  Generally Common / Widespread   
Taxonomy:   Micro   >>  Tortricidae  >> Tortricinae
Other Name/s: Rusty Oak button
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: A. notana – gen. det. required.
ID pointers: A variable species – Forewing yellowish-brown to reddish-brown. Coarsely speckled with darker markings. Often shows a small tuft of black scales a quarter distance from the head.
Distribution:  Common in many places throughout the county where there is oak. Likely under recorded due to the ID difficulty with A.notana
General Comment: None
Flight Period: January /  February /  March /  April /  May /  July /  August /  September /  October /  November /  December –  On the wing during July – August and September – May. Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 7 November 2025 by RP ***
Wingspan: 14-18mm
Food Plant: Oak (Quercus). Sallow
Specific Recorded History Dates for Common [Blue code Blue-coded] moths is not displayed/updated in this tab. However, all verified records for this moth are listed in the RECORDS tab below.

Selected Images:  Melbourne, Derbyshire – Tony Davison©



Distribution Map for Acleris ferrugana

Found 11 records
    ↳ from 2026+
    ↳ 1 from 2020 - 2025
    ↳ 10 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 – Acleris ferrugana

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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: Acleris ferrugana
( data includes both Larvae and Adult Stages )

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


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

Hectad (10kmx10km) Coverage: Acleris ferrugana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Acleris ferrugana
( 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 - Acleris ferrugana – 11 records available

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

Site NameTetradDateCountStageSource
Findern, DerbyshireSK33A20/02/20251adultvc57_irecords_extract
Dronfield WoodhouseSK37J27/08/20131adultvc57_irecords_extract
Carvers Rocks, Hartshorne, SwadlincoteSK32G18/01/20101Adultvc57_danes_bc_data
Foremark Resr, TicknallSK32H09/07/20051Adultvc57_danes_bc_data
Foremark Resr (Orange Hill wood), TicknallSK32H23/04/20041Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G29/03/20041Adultvc57_danes_bc_data
Foremark Res (Boat Yard edge), TicknallSK32G15/03/20041Adultvc57_danes_bc_data
Foremark Resr (Orchid meadow edge), TicknallSK32H15/03/20041Adultvc57_danes_bc_data
Foremark Resr (Spur's Bottom wood), TicknallSK32H15/03/20041Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G14/04/19971Adultvc57_danes_bc_data
Willington area, DerbySK22Z02/04/19051Adultvc57_danes_bc_data

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