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©



Occurrence Distribution From All Available Data (Adult & Immature)
(click legend below to show/hide datasets)

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

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.

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

⚠️ Please wait for the map to load fully – do not click the link shown.


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 NameTetradDateCountStageSource
BelperSK34N24/07/20251adultvc57_irecords_extract
Findern, DerbyshireSK33A11/07/20251adultvc57_irecords_extract
Chaddesden, DerbySK33T30/06/20251adultvc57_irecords_extract
SandiacreSK43S19/07/20241adultvc57_irecords_extract
BelperSK34N24/06/20241adultvc57_irecords_extract
BelperSK34U03/07/20231adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K30/06/20231adultvc57_irecords_extract
Woodland AveSK43R21/07/20201adultvc57_irecords_extract
Woodland AveSK43R06/07/20201adultvc57_irecords_extract
The Meads, Shipley Park, HeanorSK44H13/07/20191adultDanes_2019-2021
BelperSK34U08/07/20171adultvc57_irecords_extract
Wood Lane,Newhall,SwadlincoteSK22V18/07/20141Adultvc57_danes_bc_data
DRONFIELD WOODHOUSESK37J13/07/20141adultvc57_irecords_extract
Midway, Derbys.SK32A25/07/20091adultvc57_irecords_extract
Midway Rd,Midway,SwadlincoteSK32A25/07/20091Adultvc57_danes_bc_data
West Park Meadows (LNR),SpondonSK33Y10/07/20091Adultvc57_danes_bc_data
Calke Park Ridge from Fisherman's Car ParkSK32R31/07/20073adultvc57_irecords_extract
Calke Park Ticknall Lime YardsSK32R22/07/20072adultvc57_irecords_extract
Ticknall Limeyards,TicknallSK32R22/07/20072Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G23/06/20071Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A21/07/20066Adultvc57_danes_bc_data
Far Cross,Cavendish Park,MatlockSK36A19/07/20061Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A15/07/20061Adultvc57_danes_bc_data
Foremark Resr (pumping station), TicknallSK32H14/07/20061Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A07/07/20062Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A01/07/20061Adultvc57_danes_bc_data
Main St,Kings Newton,MelbourneSK32Y13/07/20052Adultvc57_danes_bc_data
Rosliston (National Forest Centre), SwadlincoteSK21N06/08/20041Adultvc57_danes_bc_data
Repton Shrubs, ReptonSK32B02/04/19051Adultvc57_danes_bc_data

Scroll to Top