49.211 BF1128 – Bilberry Hook-wing – Ancylis myrtillana – (Treitschke, 1830)
Adult Micro: CAT 1 – Distinctive species unlikely to be confused with others – Leaf-miner: CAT A – Recorded accepted without the leaf or a photo – Larval Case: C1 – Distinctive Species –
– click for General Verification Guidelines | – click for Specific Verification Guidelines
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Rare / Uncommon / Scarce
** Identification write up required
**
– easy to identify, generally distinctive and unlikely to be confused with other species. Distribution: (Last record: 2 May 2025 at Glossop ) – Harrison & Sterling described this species as Common and widely distributed across the high upland moors containing Bilberry. Since 1986 very few records – DaNES 3 in 1994 1 in 2010 & 1 in 2011. iRecord – one from North Derbyshire 21/5/2014, one from Hathersage, 25/6/2019 & one from Errwood/Fernilee Reservoirs 19/5/2019, one from Doveholes 21/5/2024.1 recorded 2nd May 2025 from heather moorland above Glossop. Most likely being under recorded due to very little field trapping on the high moors.
General Comment: None *** Last updated on 4 November 2025 by TD ***
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Glossop
Selected Images:
Hathersage (2019) The late Claire Miles© / Glossop (2025 Christian Heintzen©
Image Gallery
Temporal Distribution Chart
Adults: (between 1964 - 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 Ancylis myrtillana
Found 14 records
↳ from 2026+
↳ 5 from 2020 - 2025
↳ 9 from Before 2020
↳ from 2026+
↳ 5 from 2020 - 2025
↳ 9 from Before 2020
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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 – Ancylis myrtillana
⚠️ 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.
Monthly Records By Year:
Ancylis myrtillana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Ancylis myrtillana
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Ancylis myrtillana
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Ancylis myrtillana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Ancylis myrtillana
AGR: 12.26% | Total % Change: 466.7%
Hectad (10kmx10km) Coverage: Ancylis myrtillana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Ancylis myrtillana
Ancylis myrtillana
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 - Ancylis myrtillana – 14 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| Longdendale, Wildboar Clough Woodland | SK09U | 20/05/2025 | 1 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC43979226 |
| Glossop, Black Moor | SK09R | 06/05/2025 | 15 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC43979031 |
| Glossop, Moorfield, Wood's Cabin | SK09L | 02/05/2025 | 1 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC43978997 |
| Black Edge, Doveholes | SK07T | 21/05/2024 | 1 | Adult | purplesusieq | vc57_irecords_extract | iBRC36042911 |
| Norton Lees | SK38L | 26/05/2020 | 1 | adult | Mella, Pete | vc57_irecords_extract | iBRC50546372 |
| Hathersage, Derbyshire, UK | SK28F | 25/06/2019 | 1 | adult | Miles, Claire | vc57_irecords_extract | iBRC12674441 |
| Errwood/Fernilee Reservoirs | SK07C | 19/05/2019 | 1 | other | Higginson-Tranter, Dave | vc57_irecords_extract | iBRC10187485 |
| Derbyshire, UK | SK08U | 21/05/2014 | 1 | Adult | MarkCocker | vc57_irecords_extract | iBRC34024217 |
| Beeley Moor, Beeley | SK26Y | 06/05/2011 | 1 | Adult | A. Butler | vc57_danes_bc_data | LC000334001COTSL |
| Biggin Dale, nr Hartington | SK15P | 12/06/2010 | 1 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP5D4 |
| Slagmill Plantation, Beeley Moor (site not precise) | SK36E | 14/06/1994 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001COVA1 |
| Slagmill Plantation, Beeley Moor (site not precise) | SK36E | 09/06/1994 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001CP12Q |
| Linacre top resr, Chesterfield (site not precise) | SK37G | 01/06/1994 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001CP12J |
| Gladwins Mark, Beeley | SK36D | 07/06/1964 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001CP0IW |