Cloaked Minor       Marbled Minor agg
73.173 BF2337  –  Noctuidae –  Xyleninae – Oligia strigilis – Marbled Minor – (Linnaeus, 1758) Adult Macro:  CAT 4 – Dissection required – Dissection required       PDF Icon – click for Adult Macro Verification Guidelines
Blue –  Generally Common / Widespread   
Taxonomy:   Macro   >>  Noctuidae  >> Xyleninae
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Rufous Minor, Tawny Marbled Minor
ID pointers: Highly variable, a high proportion are blackish melanic forms and obscurely marked. Bright individuals can show a large white cross band on trailing edge  bordered by a solid black bar. Because this species, along with Rufous and Tawny Marbled Minors, are so difficult to separate, conclusive ID can only be determined by examination of the genitalia. However there are features across the three species that can act as a guideline. In general Marbled is generally larger with an angular forewing shape and typically has the most contrasting black and white forewing pattern. 
Distribution:  A resident that is common and widely distributed in Derbyshire. Well represented across the county but separation is difficult from other minors and so status is difficult to determine.
General Comment: None Flight Period: July /  August –  On the wing June – August. Moth Activity: Nocturnal   – is attracted to light and sugar Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 22-35mm
Forewing: 11-13mm Food Plant: Various grasses.
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.
Selected Images:  Melbourne, Derbyshire – Tony Davison©

73.173 BF2337 - Marbled Minor - Noctuidae - Oligia strigilis
Marbled Minor – the browner form – June 26th 2020
Marbled Minor - Noctuidae - Oligia strigilis
Marbled Minor
Marbled Minor - Noctuidae - Oligia strigilis
Marbled Minor
73.173 BF2337 - Marbled Minor - Noctuidae - Oligia strigilis
Marbled Minor - Noctuidae - Oligia strigilis
Marbled Minor - Noctuidae - Oligia strigilis


Image Gallery

Marbled Minor - Melbourne Tony Davison©

Distribution Map for Oligia strigilis

Found 126 records
    ↳ 3 from After 2025
    ↳ 42 from 2020 - 2024
    ↳ 81 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 – Oligia strigilis

⚠️ 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: Oligia strigilis
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Oligia strigilis
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: Oligia strigilis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Oligia strigilis
AGR: 0.22%   |   Total % Change: 4.8%


CUSUM Analysis: Oligia strigilis
About this chart: CUSUM (Cumulative Sum) charts track long-term trends in moth populations [ filtered by 'Adult' and 'Mine' life stages ] by showing whether each year’s counts are above or below the historical average. Even small shifts build up over time, making trends of growth, stability, or decline easier to see. CUSUM highlights trend-consistency — asking: “Across the years, have moth counts mostly stayed above or below average?”
The data sample has 10 gap year/s here (zero records) between 2000 and 2025. The moth may have been present in those gap years, but no data was available. Too many year-gaps may exaggerate or skew the chart.

Counts for the current year (2025) are pro-rated based on data available up to month 10 (October) to provide a full-year equivalent.

ⓘ Purple line rises = years better than average; falls = years worse than average.
Peak (best year) Trough (worst year) Growth periods Decline periods
Population peaked around 2022, reaching above average levels. The lowest population point occurred near 2017, showing a significant decline.

What the Y-axis "Cumulative Deviation" means: Cumulative Deviation shows the running total of how each year’s moth population count differs from the long-term average. i

Hectad (10kmx10km) Coverage: Oligia strigilis
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Oligia strigilis
( 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 2020-2025.

Records Behind the Map and Charts - Oligia strigilis – 126 records available

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

Site NameTetradDateCountStageSource
Wingerworth, DerbyshireSK36Y26/06/20252adultvc57_irecords_extract
Aston-on-Trent, DerbyshireSK43A25/05/20253adultvc57_irecords_extract
Aston-on-Trent, DerbyshireSK43A21/05/20251Adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A20/07/20242adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A17/07/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A09/07/20242adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A05/07/20241adultvc57_irecords_extract
upper cromford gardenSK25Y02/07/20241adultvc57_irecords_extract
Garden, WaltonSK36U27/06/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A26/06/20244adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A23/06/20243adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A21/06/20243adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A20/06/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A13/06/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A11/06/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A03/06/20242adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A28/05/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A17/05/20241adultvc57_irecords_extract
Garden, WaltonSK36U07/07/20231adultvc57_irecords_extract
Garden, WaltonSK36U15/06/20232adultvc57_irecords_extract
Allestree, Derby, Elm GroveSK34K07/08/20222adultvc57_irecords_extract
Garden, WaltonSK36U19/07/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K17/07/20222adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A11/07/20229adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K08/07/20222adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K05/07/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K01/07/20222adultvc57_irecords_extract
Garden, WaltonSK36U24/06/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K23/06/20226adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K21/06/20221adultvc57_irecords_extract
Garden, WaltonSK36U18/06/20226adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K17/06/20227adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A12/06/20223adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F11/06/20221adultvc57_irecords_extract
Garden, WaltonSK36U11/06/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K09/06/20223adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A03/06/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K02/06/20222adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K27/05/20221adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A23/07/20211adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A02/07/20219adultvc57_irecords_extract
Garden, WaltonSK36U27/06/20211adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A23/06/20214adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A24/07/20201adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A15/07/20201adultvc57_irecords_extract
Marlborough Road, Long EatonSK43X16/06/20193adultvc57_irecords_extract
Pleasley Pit CP, PleasleySK46X26/05/20191Adultvc57_danes_bc_data
Trowell Marsh LNRSK43U16/06/20183adultvc57_irecords_extract
Pleasley Pit CP, PleasleySK46X12/06/20171Adultvc57_danes_bc_data
Greenwood Centre, TotonSK43X23/07/20161not recordedvc57_irecords_extract
Melbourne, DerbyshireSK32X30/06/20154adultvc57_irecords_extract
Melbourne, DerbyshireSK32X27/06/20151adultvc57_irecords_extract
Melbourne, DerbyshireSK32X15/06/20152adultvc57_irecords_extract
Findern, DerbyshireSK33A28/06/20143adultvc57_irecords_extract
Melbourne, DerbyshireSK32X22/06/20148adultvc57_irecords_extract
Findern, DerbyshireSK33A21/06/20141adultvc57_irecords_extract
Findern, DerbyshireSK33A14/06/20141adultvc57_irecords_extract
Melbourne, DerbyshireSK32X12/06/20142adultvc57_irecords_extract
Findern, DerbyshireSK33A01/06/20141adultvc57_irecords_extract
Derby Lodge,Shipley ParkSK44H31/05/20141Adultvc57_danes_bc_data
Derby Lodge,Shipley ParkSK44H31/05/20141Adultvc57_danes_bc_data
Melbourne, DerbyshireSK32X20/05/20111adultvc57_irecords_extract
Melbourne, DerbyshireSK32X08/07/20102adultvc57_irecords_extract
Oaks Barn Cottage, Monyash Rd, Over Haddon, BakewellSK26D09/06/20091Adultvc57_danes_bc_data
Oaks Barn Cottage, Monyash Rd, Over Haddon, BakewellSK26D09/06/20091Adultvc57_danes_bc_data
Foremark Resr, TicknallSK32H09/07/20051Adultvc57_danes_bc_data
Briar Close,Newhall,SwadlincoteSK22V02/07/20051Adultvc57_danes_bc_data
Carsington Resr (Rangers' Base)SK25K29/06/20054Adultvc57_danes_bc_data
Mercaston Marsh Zone , Mercaston, BrailsfordSK24R24/06/20051Adultvc57_danes_bc_data
Briar Close,Newhall,SwadlincoteSK22V22/06/20051Adultvc57_danes_bc_data
Briar Close,Newhall,SwadlincoteSK22V18/06/20051Adultvc57_danes_bc_data
Church St,Holloway,MatlockSK35I15/07/20042Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X15/07/20045Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X11/07/20041Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X29/06/20042Adultvc57_danes_bc_data
Foremark Resr, TicknallSK32H25/06/20041Adultvc57_danes_bc_data
Church St,Holloway,MatlockSK35I14/06/20041Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X11/06/20041Adultvc57_danes_bc_data
Church St,Holloway,MatlockSK35I07/06/20042Adultvc57_danes_bc_data
Church St,Holloway,MatlockSK35I01/06/20042Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X31/05/20041Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X28/05/20043Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M18/06/19992Adultvc57_danes_bc_data
Millers Dale (west of Litton Mill)SK17L05/07/19971Adultvc57_danes_bc_data
Dale View Terrace, Cressbrook, Little LongstoneSK17R20/07/19961Adultvc57_danes_bc_data
Priestcliffe Lees (Comp W), TaddingtonSK17L06/07/19961Adultvc57_danes_bc_data
Shipley Hill, Shipley Park, IlkestonSK44H02/07/19941Adultvc57_danes_bc_data
Whitwell Wood,WhitwellSK57E20/07/19901Adultvc57_danes_bc_data
Lock Lane Tip, Sawley, Long EatonSK43V04/07/19871adultvc57_irecords_extract
Matlock (Teacher Training College)SK36A07/07/19835Adultvc57_danes_bc_data
Matlock (Teacher Training College)SK36A27/06/19821Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R08/07/19818Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R05/07/19819Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R21/07/19802Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R10/07/19803Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R06/07/19802Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R03/07/19801Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R02/07/19801Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R23/06/19801Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R18/06/19801Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R13/06/19803Adultvc57_danes_bc_data
Drummond Rd, IlkestonSK44R10/06/19803Adultvc57_danes_bc_data
Hopton Wood Quarry (site not precise)SK25M04/07/19701Adultvc57_danes_bc_data
Newbold Rd, ChesterfieldSK37R12/06/19631Adultvc57_danes_bc_data
Newbold Rd, ChesterfieldSK37R19/08/19621Adultvc57_danes_bc_data
Newbold Rd, ChesterfieldSK37R14/08/19621Adultvc57_danes_bc_data
Manners Wood,BakewellSK26J17/06/19611Adultvc57_danes_bc_data
Manners Wood,BakewellSK26J18/06/19601Adultvc57_danes_bc_data
Newbold Ave, ChesterfieldSK37R05/06/19601Adultvc57_danes_bc_data
Manners Wood,BakewellSK26J05/06/19601Adultvc57_danes_bc_data
Heath Av, Littleover, Derby (home address asumed)SK33H30/05/19593Adultvc57_danes_bc_data
Newbold Ave, ChesterfieldSK37R30/08/19571Adultvc57_danes_bc_data
Repton (site not precise)SK32B01/06/1957116Adultvc57_danes_bc_data
Repton (site not precise)SK32B02/06/1956467Adultvc57_danes_bc_data
Repton (site not precise)SK32B16/07/1955182Adultvc57_danes_bc_data
Melton Ave, Littleover, DerbySK33G09/07/19481Adultvc57_danes_bc_data
Darley Dale (site not precise)SK26R01/06/19181Adultvc57_danes_bc_data
Coxbench (site not precise)SK34R25/06/19161Adultvc57_danes_bc_data
Trent College, Long Eaton (site not precise)SK43W05/07/19141Adultvc57_danes_bc_data
Repton (site not precise)SK32B13/06/19141Adultvc57_danes_bc_data
Milford, Duffield (site not precise)SK34M18/06/19121Adultvc57_danes_bc_data
Repton (site not precise)SK32B01/01/19101Adultvc57_danes_bc_data
Poolsbrook, Staveley (site not precise)SK47G29/06/19061Adultvc57_danes_bc_data
Repton (site not precise)SK32B01/07/19051Adultvc57_danes_bc_data
Bakewell (site not precise)SK26J06/06/18931Adultvc57_danes_bc_data
Repton (site not precise)SK32B01/01/18001Adultvc57_danes_bc_data

Cloaked Minor       Marbled Minor agg

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