73.119 BF2368 - The Crescent - Noctuidae - Helotropha leucostigma
73.119 BF2368  – The Crescent  – Helotropha leucostigma  – (Hübner, 1808)
Adult Macro:  CAT 1 – Distinctive species unlikely to be confused with others –      
PDF Icon – click for Adult Macro Verification Guidelines

Green –  Rare / Uncommon / Scarce   
Taxonomy:   Macro  >>.  >>  Noctuidae  >> Xyleninae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Forewing can be a dark chocolate brown or reddish brown and somewhat pointed. Kidney mark is chalky white or pale buff, narrow and crescent-like. The photograph by John Turner of a Common Rustic agg is shown on here for educational purposes. After an initial ID of Common Rustic, John though it might be a Crescent, due to shape and wing length. I replied to his post, and agreed that it might be one but the moth was well worn. Two respected recorders replied with their comments of the moth being a Common Rustic agg and not a Crescent. Their reasoning is posted here for future ID assistance – Comment 1) [“Sorry – this is a Common Rustic agg. for me. The reniform stigma is not quite the right shape and wing-length looks too short for Crescent (appreciate that is subjective from this photo alone). Meant to add that female Common Rustic agg. can look a little longer-winged than males” Comment 2) [“I agree that the reniform stigma doesn’t look either the right shape or bright enough for a Crescent, and from such a poor photo I’d be reluctant to call it anything but a Common Rustic agg. Even in the plain form of Crescent the kidney is very bright, and not just a ring as in this moth.”]
Distribution:  (Last record: 6 August 2025 at Dinting, Derbyshire )  –  A scarce species that is locally distributed in Derbyshire. A few populations survive at isolated sites in the Trent and Derwent Valleys. The 2nd record for NE Derbyshire was recorded during a Bioblitz at Dinting on 6th August 2025.
General Comment: None
Flight Period: July /  August –  On the wing  July – August. Moth Activity: Nocturnal   – but can be disturbed during the day Photographed: Yes –  Photographed By: Steve Orridge, Steve Thorpe, Dave Newcombe; Christian Heintzen  © All Rights Reserved
*** Last updated on 12 December 2025 by TD ***
Wingspan: 37-44mm
Forewing: 14-17mm
Food Plant: Yellow flag (Iris pseudacorus).
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Dinting, Derbyshire

Selected Images:  Image by Steve Orridge©  /  Image Steve Thorpe© / Belper (2025) Dave Newcombe© / Common Rustic agg – New Mills (2025) John Turner© / Dinting (Aug 2025) Christian Heintzen©



Temporal Distribution Chart
Adults: (between 1912 - 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 Helotropha leucostigma

Found 44 records
    ↳ from 2026+
    ↳ 13 from 2020 - 2025
    ↳ 31 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 – Helotropha leucostigma

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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: Helotropha leucostigma
( data includes both Larvae and Adult Stages )

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

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

Hectad (10kmx10km) Coverage: Helotropha leucostigma
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Helotropha leucostigma

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 - Helotropha leucostigma – 44 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Woodland Avenue Mothtrap SK43R 24/08/2025 1 adult Thorpe, Steve vc57_irecords_extract iBRC49661316
Ladycroft Ave, Buxton SK07S 20/08/2025 1 adult Orridge, Steve vc57_irecords_extract iBRC48189977
Cown Edge Farm marsh SK09A 14/08/2025 1 adult Heintzen, Christian vc57_irecords_extract iBRC48740683
Glossop SK, UK SK09C 07/08/2025 1 Adult Alex Lees vc57_irecords_extract iBRC44243525
Dinting Nature Reserve SK09C 06/08/2025 1 adult Christian Heintzen, David Walsh, Bill Underwood, Alex Lees vc57_irecords_extract iBRC44291337
King's Newton SK32Y 29/07/2025 1 adult Soar, Will vc57_irecords_extract iBRC48470432
Belper, Derbyshire SK34N 16/07/2025 1 adult Newcombe, Dave vc57_irecords_extract iBRC44235579
Woodland Ave SK43R 16/08/2024 1 adult Thorpe, Steve vc57_irecords_extract iBRC40045230
Mellor SJ98Z 04/08/2024 1 adult Knass, David vc57_irecords_extract iBRC37679726
King's Newton SK32Y 29/07/2024 1 adult Soar, Will vc57_irecords_extract iBRC40386691
Findern Garden SK33A 11/08/2023 1 Adult Hallam, Brian vc57_irecords_extract iBRC34638051
Woodland Ave SK43R 27/07/2022 1 adult Thorpe, Steve vc57_irecords_extract iBRC33495061
Woodland Ave SK43R 27/08/2021 1 adult Thorpe, Steve vc57_irecords_extract iBRC33499416
Buxton SK, UK SK07S 29/08/2017 1 Adult Orridge, Steve vc57_irecords_extract iBRC22321635
Buxton SK, UK SK07S 29/08/2017 1 Adult Orridge, Steve vc57_irecords_extract iBRC22504124
Drakelow NR (Minton's Lagoon), Burton on Trent SK22F 13/09/2014 1 Adult M.J. Williams vc57_danes_bc_data LC000334001WOUPD
Repton (site not precise) SK32B 04/08/2012 1 Adult H.C. Hayward vc57_danes_bc_data LC000334001WQBJU
Drakelow NR,Burton on Trent SK22F 20/07/2012 4 Adult M.J. Williams vc57_danes_bc_data LC000334001OJV1O
Dronfield Woodhouse SK37J 22/08/2011 1 adult Williamson, Andy vc57_irecords_extract iBRC45397458
Marlborough Rd,Long Eaton SK43X 13/09/2010 2 Adult Bryce, Marion vc57_danes_bc_data LC000334001OKXWB
Drakelow NR (Minton's Lagoon), Burton on Trent SK22F 01/09/2010 20 Adult M.J. Williams vc57_danes_bc_data LC000334001OKXI8
Drakelow NR (Minton's Lagoon), Burton on Trent SK22F 01/09/2010 20 Adult M.J. Williams vc57_danes_bc_data LC000334001WPRZK
Drakelow NR (Minton's Lagoon), Burton on Trent SK22F 22/08/2009 1 Adult M.J. Williams vc57_danes_bc_data LC000334001OJN5G
Drakelow NR (Minton's Lagoon), Burton on Trent SK22F 22/08/2009 1 Adult M.J. Williams vc57_danes_bc_data LC000334001WPVOH
Bristol Rd,Ilkeston SK44R 12/08/2009 1 Adult S.L.P. Whiteley vc57_danes_bc_data LC000334001OKPPM
Drakelow NR,Burton on Trent SK22F 13/09/2007 1 Adult M.J. Williams vc57_danes_bc_data LC000334001OJZCC
Drakelow NR,Burton on Trent SK22F 13/09/2007 1 Adult M.J. Williams vc57_danes_bc_data LC000334001WOXSM
Drakelow NR,Burton on Trent SK22F 08/09/2007 2 Adult M.J. Williams vc57_danes_bc_data LC000334001OJZBC
Drakelow NR,Burton on Trent SK22F 08/09/2007 2 Adult M.J. Williams vc57_danes_bc_data LC000334001WOO39
Edgecote Drive,Newhall,Swadlincote SK22V 14/08/2005 1 Adult Topliss, Neil vc57_danes_bc_data LC000334001OHS12
The Field,Shipley,Ilkeston SK44M 01/08/2005 1 Adult T. Duro vc57_danes_bc_data LC000334001OHRY7
The Field,Shipley,Ilkeston SK44M 01/08/2005 1 Adult T. Duro vc57_danes_bc_data LC000334001WOVMA
The Hollies,Station Rd,Darley Dale SK26R 07/08/2004 1 Adult Roddis, Simon vc57_danes_bc_data LC000334001OJ7J6
Stevens Rd, Sandiacre SK43T 27/08/1996 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OI2TT
Cross Green Cottages,Flint Lane,South Darley SK26Q 22/07/1992 1 Adult R. Hawksworth vc57_danes_bc_data LC000334001OIWFX
Wilmot St, Sawley, Long Eaton SK43R 08/08/1988 1 Adult A. Braddock vc57_danes_bc_data LC000334001OI087
Wilmot St, Sawley, Long Eaton SK43R 21/08/1987 1 Adult A. Braddock vc57_danes_bc_data LC000334001OHJXX
Newbold Ave, Chesterfield SK37R 30/08/1957 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OHEX1
Lumsdale, Matlock SK36A 22/07/1957 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OIFJS
Lumsdale, Matlock SK36A 22/07/1957 1 Adult M.H. Mills vc57_danes_bc_data LC000334001WPQC0
Berry St, Hepthorne Lane SK46C 16/09/1954 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OJHQ6
Linacre Resr, Chesterfield SK37G 01/09/1951 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OJHNB
Linacre Resr, Chesterfield SK37G 01/09/1951 1 Adult B. Elliott vc57_danes_bc_data LC000334001WOSL1
Repton (site not precise) SK32B 04/08/1912 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OHDDS

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