70.292 BF1969 - Grey Scalloped Bar - Geometridae - Dyscia fagaria
70.292 BF1969  – Grey Scalloped Bar  – Dyscia fagaria  – (Thunberg, 1784)
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  >>.  >>  Geometridae  >> Ennominae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Quite a distinctive moth. As the name suggests, there is a curved scalloped cross-line running through the outer forewing running into hindwing and another smaller curved cross-line near the wing base. A dark spot is located in between the two forewing cross-lines. The ground colour is a silver-grey but can be very variable.
Distribution:  (Last record: 21 May 2025 at Glossop )  –  Last Recorded in 2023 – A scarce resident that is locally distributed in Derbyshire. Despite considerable areas of moorland in the north of the county, this moth is rarely seen and seems to favour the eastern moors. During the period 2019-2023 only four reports.
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: Simon Roddis, Christian Heintzen  © All Rights Reserved
*** Last updated on 22 February 2026 by TD ***
Wingspan: 31-40mm
Food Plant: Heather (Calluna) and Heath (Erica).
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Glossop

Selected Images:  Derbyshire – Image by Simon Roddis ©  /  Wildboar Clough, Longdendale, Derbyshire – Christian Heintzen ©



Temporal Distribution Chart
Adults: (between 1958 - 2025)  |  Immatures: (between 1971 - 1976)
(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 Dyscia fagaria

Found 32 records
    ↳ from 2026+
    ↳ 8 from 2020 - 2025
    ↳ 24 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 – Dyscia fagaria

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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: Dyscia fagaria
( data includes both Larvae and Adult Stages )

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

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

Hectad (10kmx10km) Coverage: Dyscia fagaria
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Dyscia fagaria

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 - Dyscia fagaria – 32 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Glossop, Hague Street, Hay Meadow SK09G 21/05/2025 1 adult Heintzen, Christian vc57_irecords_extract iBRC43979270
Wardlow, Roost Barn SK17X 16/05/2025 1 adult Fletcher, Neil vc57_irecords_extract iBRC41789711
Derbyshire Wild Life Trust Long Clough SK09G 09/05/2025 1 adult Heintzen, Christian vc57_irecords_extract iBRC43979054
Glossop, Black Moor at m SK09Q 14/07/2024 1 adult Heintzen, Christian vc57_irecords_extract iBRC38130488
Staveley Derbyshire SK47H 23/06/2023 1 adult Morris, Sid vc57_irecords_extract iBRC31050935
Glossop, Gnat Hole Rough Fields SK09L 02/06/2023 1 adult Heintzen, Christian vc57_irecords_extract iBRC36336102
Glossop, Moorfield, Wood's Cabin SK09L 22/05/2023 1 adult Heintzen, Christian vc57_irecords_extract iBRC36335990
Hathersage SK28F 26/06/2021 1 adult Kydd, Alan vc57_irecords_extract iBRC39038146
Birch Vale SK08I 07/06/2018 1 adult Hewitt, Jane vc57_irecords_extract iBRC40106020
The Old Manse, Ault Hucknall, Glapwell SK46S 22/07/2013 1 Adult M.E. Bradley vc57_danes_bc_data LC000334001OJX5H
The Old Manse, Ault Hucknall, Glapwell SK46S 22/07/2013 1 Adult M.E. Bradley vc57_danes_bc_data LC000334001WQC93
The Hollies,Station Rd,Darley Dale SK26R 08/06/2009 1 Adult Roddis, Simon vc57_danes_bc_data LC000334001OJLRN
Beeley Moor (Slagmill Plantation) SK36E 09/05/2007 1 Adult D.A. Clarke vc57_danes_bc_data LC000334001OJH9X
Beeley Moor (triangle), Beeley SK26Y 27/05/1990 2 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OIU9G
Beeley Triangle, Beeley Moor, Beeley SK26Y 27/05/1990 2 Adult A Jenkins;B.L. Statham vc57_danes_bc_data LC000334001WON96
Beeley Moor (triangle), Beeley SK26Y 22/05/1990 3 Adult B.L. Statham vc57_danes_bc_data LC000334001OI0QG
Beeley Moor (triangle), Beeley SK26Y 22/05/1990 3 Adult B.L. Statham vc57_danes_bc_data LC000334001WQ52W
Johnnygate, Barlow, Chesterfield SK37C 29/07/1979 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OILU6
Johnnygate, Barlow, Chesterfield SK37C 29/07/1979 1 Adult R.T. Doncaster vc57_danes_bc_data LC000334001WPJ3M
Beeley Moor, Beeley (site not precies) SK26Z 03/07/1979 5 Adult B.L. Statham vc57_danes_bc_data LC000334001OHGJE
Whitesprings, Hall Dale, Darley Dale (site not precise) SK26R 24/04/1976 1 Larvae VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OHFMM
Wragg's Quarry, Beeley Moor SK26Y 04/05/1971 1 Larvae VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OIDQ9
Wragg's Quarry, Beeley Moor, Beeley SK26Y 04/05/1971 1 Larvae H. Trollope vc57_danes_bc_data LC000334001WQ9XB
Wragg's Quarry,Rowsley Moor SK26Y 26/07/1969 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OIHOS
Wragg's Quarry, Beeley Moor, Beeley SK26Y 26/07/1969 1 Adult B. Elliott vc57_danes_bc_data LC000334001WPUFO
Beeley Moor, Beeley (site not precies) SK26Z 06/07/1969 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OHW4U
Beeley Moor, Beeley (site not precise) SK26Z 06/07/1969 1 Adult B. Elliott vc57_danes_bc_data LC000334001WPUDA
Slagmill Plantation (moors area) (site not precise) SK26Z 18/06/1960 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OIGRW
Wragg's Quarry,Rowsley Moor SK26Y 21/06/1958 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OIFND
Wragg's Quarry, Beeley Moor, Beeley SK26Y 21/06/1958 1 Adult B. Elliott vc57_danes_bc_data LC000334001WPQCY
Wragg's Quarry,Rowsley Moor SK26Y 27/05/1958 1 Adult VC57 Derbyshire Recorder vc57_danes_bc_data LC000334001OHVBW
Wragg's Quarry, Beeley Moor, Beeley SK26Y 27/05/1958 1 Adult B. Elliott vc57_danes_bc_data LC000334001WOQQN

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