62.034 BF1436 - Pyralidae - Phycitinae - Acrobasis repandana
62.034 BF1436  – Beautiful Oak Knot-horn  – Acrobasis repandana  – (Fabricius, 1798)
Adult Micro:  CAT 1 – Distinctive species unlikely to be confused with others –      
PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Blue –  Generally Common / Widespread   
Taxonomy:   Micro   >>  Pyralidae  >> Phycitinae
Other Name/s: Warted Knot-horn, Conobathra repandana
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Forewing is grey with pinkish, reddish and orange markings – a white cross-band, edged black at about a third. A very colourful pyralid.
Distribution:  Probably locally common in the county where there is oak.
General Comment: None
Flight Period: July /  August –  On the wing during July – August. Moth Activity: Nocturnal   – sometimes seen during the day Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 20-25mm
Food Plant: Oak (Quercus).
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:  Belper, Derbyshire – Dave Evans©



Temporal Distribution Chart
Adults: (between 1905 - 2025)
(click legend below to show/hide datasets)
This chart summarises all available historical occurrence records collated by ISO week of the year. It reflects recorder effort and sampling distribution as well as true biological activity, and should be interpreted as an indicative pattern of seasonal occurrence rather than a statistically controlled abundance or phenology model.

Distribution Map for Acrobasis repandana

Found 29 records
    ↳ from 2026+
    ↳ 9 from 2020 - 2025
    ↳ 20 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 – Acrobasis repandana

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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: Acrobasis repandana
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Acrobasis repandana
( data is based on 'Adult' stage records only )

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

Hectad (10kmx10km) Coverage: Acrobasis repandana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Acrobasis repandana

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 - Acrobasis repandana – 29 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Belper SK34N 24/07/2025 1 adult Evans, Dave vc57_irecords_extract iBRC43875929
Findern, Derbyshire SK33A 11/07/2025 1 adult Hallam, Brian vc57_irecords_extract iBRC43392136
Chaddesden, Derby SK33T 30/06/2025 1 adult roome, martin vc57_irecords_extract iBRC43931902
Sandiacre SK43S 19/07/2024 1 adult paul buxton vc57_irecords_extract iBRC37326474
Belper SK34N 24/06/2024 1 adult Evans, Dave vc57_irecords_extract iBRC36622650
Belper SK34U 03/07/2023 1 adult Evans, Dave vc57_irecords_extract iBRC35314679
Kirk Hallam, Ilkeston SK44K 30/06/2023 1 adult Hobby, Brian vc57_irecords_extract iBRC48690845
Woodland Ave SK43R 21/07/2020 1 adult Thorpe, Steve vc57_irecords_extract iBRC33501623
Woodland Ave SK43R 06/07/2020 1 adult Thorpe, Steve vc57_irecords_extract iBRC33501392
The Meads, Shipley Park, Heanor SK44H 13/07/2019 1 adult COX, Mr K. Danes_2019-2021 1364
Belper SK34U 08/07/2017 1 adult Evans, Dave vc57_irecords_extract iBRC38609951
Wood Lane,Newhall,Swadlincote SK22V 18/07/2014 1 Adult Dave Budworth vc57_danes_bc_data LC000334001CP9KV
DRONFIELD WOODHOUSE SK37J 13/07/2014 1 adult Williamson, Andy vc57_irecords_extract iBRC45550636
Midway, Derbys. SK32A 25/07/2009 1 adult Williams, Michael vc57_irecords_extract iBRC41991107
Midway Rd,Midway,Swadlincote SK32A 25/07/2009 1 Adult M.J. Williams vc57_danes_bc_data LC000334001CP4Y0
West Park Meadows (LNR),Spondon SK33Y 10/07/2009 1 Adult BUDWORTH, Mr D., WARD, Mr N.J., MILLAR, Mr J.C.G., vc57_danes_bc_data LC000334001CP9Z1
Calke Park Ridge from Fisherman's Car Park SK32R 31/07/2007 3 adult Finch, Graham Leonard vc57_irecords_extract iBRC35105852
Calke Park Ticknall Lime Yards SK32R 22/07/2007 2 adult Finch, Graham Leonard vc57_irecords_extract iBRC35105922
Ticknall Limeyards,Ticknall SK32R 22/07/2007 2 Adult Finch, Graham Leonard vc57_danes_bc_data LC000334001CP3YT
Carvers Rocks, Hartshorne, Swadlincote SK32G 23/06/2007 1 Adult M.J. Williams vc57_danes_bc_data LC000334001CP3W3
Midway Rd,Midway,Swadlincote SK32A 21/07/2006 6 Adult M.J. Williams vc57_danes_bc_data LC000334001CORUF
Far Cross,Cavendish Park,Matlock SK36A 19/07/2006 1 Adult B.L. Statham vc57_danes_bc_data LC000334001CP39Q
Midway Rd,Midway,Swadlincote SK32A 15/07/2006 1 Adult M.J. Williams vc57_danes_bc_data LC000334001COW1Q
Foremark Resr (pumping station), Ticknall SK32H 14/07/2006 1 Adult M.J. Williams vc57_danes_bc_data LC000334001CP378
Midway Rd,Midway,Swadlincote SK32A 07/07/2006 2 Adult M.J. Williams vc57_danes_bc_data LC000334001COW0L
Midway Rd,Midway,Swadlincote SK32A 01/07/2006 1 Adult M.J. Williams vc57_danes_bc_data LC000334001CP34B
Main St,Kings Newton,Melbourne SK32Y 13/07/2005 2 Adult Soar, Will vc57_danes_bc_data LC000334001COVUF
Rosliston (National Forest Centre), Swadlincote SK21N 06/08/2004 1 Adult Dave Budworth;I.M. Viles vc57_danes_bc_data LC000334001CP2AT
Repton Shrubs, Repton SK32B 02/04/1905 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001COQH5

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