70.121 BF1789 – Scallop Shell – Rheumaptera undulata – (Linnaeus, 1758)
Adult Macro: CAT 1 – Distinctive species unlikely to be confused with others –
– click for Adult Macro Verification Guidelines
– click for Adult Macro Verification Guidelines
– Rare / Uncommon / Scarce
– easy to identify, generally distinctive and unlikely to be confused with other species.ID pointers: A beautiful and diagnostic looking geometrid moth that cannot be confused with anything else.
Distribution: (First record: 1895 ) – (Last record: 2024 ) – A resident but locally distributed and scarce in the county. First recorded in 1895, then no more records until the 1970’s. A scattering of records since then. Only one record from the south of the county in June 2017, otherwise the rest have come from NW Derbyshire
General Comment: None *** Last updated on 2 October 2025 by RP ***
Forewing: 16-19mm
Last Recorded Year: 2024
First Recorded Year: 1895
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded
Selected Images: Findern, Derbyshire – Image by Brian Hallam © – 9th June 2017 / Glossop, Derbyshire – Image by Christian Heintzen © – 9th July 2024
Image Gallery
No gallery images found for this moth.
Temporal Distribution Chart
Adults: (between 1895 - 2025) | Immatures: (between 1995 - 2001)
(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 Rheumaptera undulata
Found 74 records
↳ from 2026+
↳ 27 from 2020 - 2025
↳ 47 from Before 2020
↳ from 2026+
↳ 27 from 2020 - 2025
↳ 47 from Before 2020
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 – Rheumaptera undulata
⚠️ 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:
Rheumaptera undulata
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Rheumaptera undulata
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Rheumaptera undulata
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: Rheumaptera undulata
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Rheumaptera undulata
AGR: 0% | Total % Change: 0%
Hectad (10kmx10km) Coverage: Rheumaptera undulata
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Rheumaptera undulata
Rheumaptera undulata
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 - Rheumaptera undulata – 74 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| Lowcroft, Hogshaw Nature Reserve, Buxton SK, UK | SK07S | 27/07/2025 | 1 | Adult | MarkCocker | vc57_irecords_extract | iBRC43898886 |
| Longdendale, Torside Clough m | SK09T | 22/07/2025 | 1 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC43980527 |
| Mellor | SJ98Z | 11/07/2025 | 1 | adult | Knass, David | vc57_irecords_extract | iBRC43380788 |
| Mellor | SJ98Z | 01/07/2025 | 1 | adult | Knass, David | vc57_irecords_extract | iBRC43060201 |
| Darwin Forest | SK26X | 01/07/2025 | 1 | adult | Evans, Dave | vc57_irecords_extract | iBRC43018260 |
| Miller's Dale | SK17G | 27/06/2025 | 1 | adult | Steven Bell | vc57_irecords_extract | iBRC42750546 |
| Belper | SK34N | 25/06/2025 | 1 | adult | Evans, Dave | vc57_irecords_extract | iBRC42681953 |
| Midway, Derbys. | SK32A | 12/06/2025 | 1 | adult | Williams, Michael | vc57_irecords_extract | iBRC42283079 |
| upper cromford garden | SK25Y | 11/08/2024 | 1 | adult | Ashton, Clive | vc57_irecords_extract | iBRC37847605 |
| Mellor | SJ98Z | 06/08/2024 | 1 | adult | Knass, David | vc57_irecords_extract | iBRC37771895 |
| Ladycroft Ave, Buxton | SK07S | 29/07/2024 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC37500343 |
| Ladycroft Ave, Buxton | SK07S | 22/07/2024 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC37493704 |
| Birch Vale | SK08I | 19/07/2024 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC39755226 |
| Derbyshire Wild Life Trust Long Clough | SK09G | 09/07/2024 | 1 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC36942251 |
| upper cromford garden | SK25Y | 09/07/2024 | 1 | adult | Ashton, Clive | vc57_irecords_extract | iBRC36939723 |
| Ladycroft Ave, Buxton | SK07S | 23/06/2023 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC35076963 |
| Birch Vale | SK08I | 05/08/2022 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC34088797 |
| Birch Vale | SK08I | 23/07/2022 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC34088104 |
| Buxton SK, UK | SK07S | 18/07/2022 | 1 | Adult | Orridge, Steve | vc57_irecords_extract | iBRC27315389 |
| Ladycroft Ave, Buxton | SK07S | 26/07/2021 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC35093324 |
| Clarkes Plantation, Two Dales, Matlock | SK26W | 23/07/2021 | 1 | adult | BUDWORTH, Mr D. | Danes_2019-2021 | 137 |
| Clarkes Plantation, Two Dales, Matlock | SK26W | 23/07/2021 | 1 | adult | BUDWORTH, Mr D. | Danes_2019-2021 | 138 |
| Birch Vale | SK08I | 16/06/2021 | 1 | Adult | Hewitt, Jane | vc57_irecords_extract | iBRC34472657 |
| Longhurst Lane, Mellor | SJ98Z | 21/07/2020 | 1 | adult | KNASS, Mr D. | Danes_2019-2021 | 518 |
| Longhurst Lane, Mellor | SJ98Z | 17/07/2020 | 1 | adult | KNASS, Mr D. | Danes_2019-2021 | 538 |
| Longhurst Lane, Mellor | SJ98Z | 14/07/2020 | 1 | adult | KNASS, Mr D. | Danes_2019-2021 | 548 |
| Longhurst Lane, Mellor | SJ98Z | 13/07/2020 | 1 | adult | KNASS, Mr D. | Danes_2019-2021 | 558 |
| Station Road, Darley Dale | SK26R | 25/07/2019 | 2 | adult | Roddis, Simon | vc57_irecords_extract | iBRC35373357 |
| Ladycroft Ave, Buxton | SK07S | 21/07/2019 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC35097231 |
| Birch Vale | SK08I | 18/07/2019 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC35072421 |
| The Mays, Malthouse Lane, Froggatt | SK27N | 13/07/2019 | 1 | adult | BARNACLE, Mr B.&.Mrs.K. | Danes_2019-2021 | 1410 |
| Birch Vale | SK08I | 04/07/2019 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC35073046 |
| Ladycroft Ave | SK07S | 14/07/2018 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC49167014 |
| Buxton SK, UK | SK07S | 09/07/2018 | 1 | Adult | Orridge, Steve | vc57_irecords_extract | iBRC22508596 |
| Birch Vale | SK08I | 06/07/2018 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC40105997 |
| Derbyshire, England, United Kingdom | SK07S | 25/07/2017 | 1 | Adult | Orridge, Steve | vc57_irecords_extract | iBRC22504118 |
| Millers Dale (quarry - east) | SK17G | 15/07/2017 | 1 | Adult | Dave Budworth;D.A. Clarke;N. Beasley;N. ELGAR;P. P | vc57_danes_bc_data | LC000334001WPQZY |
| Shirland - Hallfieldgate Lane | SK35Z | 19/06/2017 | 1 | adult | Mahadevan, Nikki | vc57_irecords_extract | iBRC34968288 |
| Gillfield Wood (nr scout hut), Totley | SK37E | 12/07/2014 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OKG96 |
| Ladycroft Ave | SK07S | 19/07/2013 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC40991082 |
| Macclesfield Rd, Whaley Bridge | SK08A | 12/07/2013 | 1 | Adult | A. Seymour | vc57_danes_bc_data | LC000334001WPMS4 |
| Buxton SK, UK | SK07S | 09/08/2012 | 1 | Adult | Orridge, Steve | vc57_irecords_extract | iBRC22503730 |
| Ladycroft Ave,Buxton | SK07S | 08/08/2012 | 1 | Adult | Orridge, Steve | vc57_danes_bc_data | LC000334001OL8RH |
| Ladycroft Ave, Buxton | SK07S | 08/08/2012 | 1 | Adult | Orridge, Steve | vc57_danes_bc_data | LC000334001WPBWJ |
| The Mays,Malthouse Lane,Froggatt | SK27N | 26/07/2012 | 1 | Adult | Barnacle, Brian | vc57_danes_bc_data | LC000334001OJV9L |
| The Mays,Malthouse Lane,Froggatt | SK27N | 26/07/2012 | 1 | Adult | B. Barnacle;K. Barnacle | vc57_danes_bc_data | LC000334001WPSF8 |
| Rosliston (National Forest Centre), Swadlincote | SK21N | 20/07/2012 | 1 | Adult | BUDWORTH, Mr D., CLARKE, Mr D.A., WARD, Mr N.J., S | vc57_danes_bc_data | LC000334001OKEHA |
| School Close,Parkway Gardens,Darley Dale | SK26R | 15/07/2011 | 1 | Adult | A. Butler | vc57_danes_bc_data | LC000334001OL26J |
| The Hollies,Station Rd,Darley Dale | SK26R | 25/06/2011 | 1 | Adult | Roddis, Simon | vc57_danes_bc_data | LC000334001OL0X4 |
| Whitesprings Plantation, Darley Dale | SK26X | 25/06/2011 | 1 | Adult | A. Butler | vc57_danes_bc_data | LC000334001OL0XW |
| Whitesprings Plantation, Darley Dale | SK26X | 25/06/2011 | 1 | Adult | A. Butler | vc57_danes_bc_data | LC000334001WPNBV |
| Rose Av,Clowne | SK57D | 22/07/2010 | 1 | Adult | D. Hursthouse | vc57_danes_bc_data | LC000334001OKVOZ |
| The Hollies,Station Rd,Darley Dale | SK26R | 25/07/2006 | 1 | Adult | Roddis, Simon | vc57_danes_bc_data | LC000334001OHTUL |
| Millers Dale | SK17L | 14/07/2006 | 1 | Adult | Roddis, Simon | vc57_danes_bc_data | LC000334001OI82F |
| Whitesprings Plantation, Flash Lane, Beeley Moor | SK26X | 04/10/2001 | 5 | Larvae | B.L. Statham | vc57_danes_bc_data | LC000334001OI41T |
| Whitesprings Plantation, Flash Lane, Beeley Moor | SK26X | 04/10/2001 | 5 | Larvae | B.L. Statham | vc57_danes_bc_data | LC000334001WPH2T |
| Ladycroft Ave,Buxton | SK07S | 03/08/2000 | 1 | Adult | Orridge, Steve | vc57_danes_bc_data | LC000334001OI3SB |
| Ladycroft Ave, Buxton | SK07S | 03/08/2000 | 1 | Adult | Orridge, Steve | vc57_danes_bc_data | LC000334001WP64L |
| School Close,Parkway Gardens,Darley Dale | SK26R | 13/07/1999 | 1 | Adult | A. Butler | vc57_danes_bc_data | LC000334001OI3L3 |
| School Close,Parkway Gardens,Darley Dale | SK26R | 06/07/1999 | 1 | Adult | A. Butler | vc57_danes_bc_data | LC000334001OI3JM |
| Priestcliffe Lees NR, Tideswell | SK17L | 25/07/1998 | 1 | Adult | S.A. Orridge;S.H. Hind | vc57_danes_bc_data | LC000334001OHNWF |
| Priestcliffe Lees NR, Tideswell | SK17L | 25/07/1998 | 1 | Adult | Steve Orridge;S.H. Hind | vc57_danes_bc_data | LC000334001WP5GR |
| Calke Park (Poker's Leys), Ticknall | SK32L | 17/07/1998 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OJ0VY |
| Calke Park (Poker's Leys), Ticknall | SK32L | 17/07/1998 | 1 | Adult | I.M. Viles;T. Barnard | vc57_danes_bc_data | LC000334001WP5FS |
| Matlock Forest, Matlock (site not precise) | SK36B | 01/09/1996 | 21 | Larvae | B.L. Statham | vc57_danes_bc_data | LC000334001OHNFL |
| Flash Lane,Beeley Moor | SK26X | 05/08/1996 | 5 | Adult | B.L. Statham | vc57_danes_bc_data | LC000334001OHNBZ |
| Farley Moor, Farley, Matlock | SK34L | 08/09/1995 | 9 | Larvae | B.L. Statham | vc57_danes_bc_data | LC000334001OIZFJ |
| Flash Lane,Beeley Moor | SK26X | 10/07/1993 | 1 | Adult | B.L. Statham | vc57_danes_bc_data | LC000334001OIXCF |
| Askew Grove, Repton | SK32D | 22/07/1980 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001OIMNS |
| Hilton NR, Hilton, Burton on Trent | SK23K | 10/07/1976 | 1 | Adult | F. Harrison | vc57_danes_bc_data | LC000334001OIJWS |
| Elvaston Park (site D), Derby | SK43B | 15/07/1973 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OII6D |
| Elvaston Park (site D), Derby | SK43B | 04/07/1973 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OII52 |
| Chellaston, Derby (site not precise) | SK33Q | 01/07/1895 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OLG4L |
| Chellaston, Derby (site not precise) | SK33Q | 01/07/1895 | 1 | Adult | F.W.G. Payne;T. Hey;T.H. Sharratt | vc57_danes_bc_data | LC000334001WPRCS |