Large Emerald       Small Emerald
70.300 BF1667  –  Geometridae –  Geometrinae – Comibaena bajularia – Blotched Emerald – ([Denis & Schiffermüller], 1775) Adult Macro:  CAT 1 – Distinctive species unlikely to be confused with others –       PDF Icon – click for Adult Macro Verification Guidelines
Brown –  Significant Record / Very Rare / Vagrant    
Taxonomy:   Macro   >>  Geometridae  >> Geometrinae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Really unmistakable, a medium sized green moth with cream and fawn blotching on trailing edges of hind and forewing are diagnostic.
Distribution:  (Last record: 18 June 2023 at Kirk Hallam )  –  Last recorded in June 2023 – A resident that is rare, with isolated records each year. The species appears to be mainly restricted to sites in the south of the county, but isolated vagrants are recorded from places well away from their usual habitats. For example one was trapped at Froggatt on 22nd June 2016 by Kate & Bryan Barnacle. Five records between 2019-2023 with last one on 18 June 2023 from Kirk Hallam.
Flight Period: June /  July /  –  On the wing – late June – July. Photographed: Yes –  Photographed By: Kate & Bryan Barnacle  © All Rights Reserved
*** Last updated on 21 July 2025 by WS ***
Wingspan: 23-27mm
Forewing: 14-17mm Food Plant: Oak (Quercus).
Last Recorded Year: 2023
Last Recorded By – Brian Hobby
Last Recorded General Area – Kirk Hallam
IMAGES BELOW:  Froggatt, Derbyshire – Image by Kate & Bryan Barnacle ©

Blotched Emerald - Geometridae - Comibaena bajularia
Blotched Emerald – Comibaena bajularia
Blotched Emerald - Geometridae - Comibaena bajularia

no images were found

Distribution Map for Comibaena bajularia

Found 24 records
    ↳ 0 from After 2025
    ↳ 3 from 2020 - 2024
    ↳ 21 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.

******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******

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.

Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.


NBN Atlas UK Distribution for – Comibaena bajularia

⚠️ 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: Comibaena bajularia
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Comibaena bajularia
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 20 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 7 (July) 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 2005, reaching above average levels. The lowest population point occurred near 2005, 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: Comibaena bajularia
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Comibaena bajularia
( 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 - Comibaena bajularia – 24 records available

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

TaxonSite NameTetradYearDateCountStageSource
Comibaena bajulariaNot givenSK33A202109/07/20211Adultvc57_irecords_extract
Comibaena bajulariaFindern, Derbyshire, DEAZSK33A202102/07/20211adultvc57_irecords_extract
Comibaena bajulariaFindern, Derbyshire, DEAZSK33A202109/07/20211adultvc57_irecords_extract
Comibaena bajulariaFindern, Derbyshire, DEAZSK33A201921/06/20191adultvc57_irecords_extract
Comibaena bajulariaDerbyshire, UKSK25I201817/06/20181Adultvc57_irecords_extract
Comibaena bajulariaDrayton Ave,Mackworth,DerbySK33D200730/06/20071Adultvc57_danes_bc_data
Comibaena bajulariaDrayton Ave,Mackworth,DerbySK33D200730/06/20071Adultvc57_danes_bc_data
Comibaena bajulariaThe Field,Shipley,IlkestonSK44M200625/06/20061Adultvc57_danes_bc_data
Comibaena bajulariaShipley Park (Cinder Hill), Shipley, IlkestonSK44H200502/07/20051Adultvc57_danes_bc_data
Comibaena bajulariaShipley Park (Cinder Hill), Shipley, IlkestonSK44H200502/07/20051Adultvc57_danes_bc_data
Comibaena bajulariaCalke Park (Betty's Pool),TicknallSK32R199803/07/19982Adultvc57_danes_bc_data
Comibaena bajulariaCalke Park (Betty's Pool),TicknallSK32R199804/07/19981Adultvc57_danes_bc_data
Comibaena bajulariaSpring Wood NR, Calke, MelbourneSK32R199704/07/19971Adultvc57_danes_bc_data
Comibaena bajulariaCalke Park (Betty's Pool),TicknallSK32R199711/07/19971Adultvc57_danes_bc_data
Comibaena bajulariaCalke Park (Betty's Pool),TicknallSK32R199711/07/19971Adultvc57_danes_bc_data
Comibaena bajulariaPond House, Mapperley Res, IlkestonSK44G198801/07/19881Adultvc57_danes_bc_data
Comibaena bajulariaPond House, Mapperley Res, IlkestonSK44G198801/07/19881Adultvc57_danes_bc_data
Comibaena bajulariaCalke Park EstateSK32R198703/07/19873adultvc57_irecords_extract
Comibaena bajulariaDeerlands Rd, Ashgate, ChesterfieldSK37K198611/07/19861Adultvc57_danes_bc_data
Comibaena bajulariaWolds Rise, Cavendish Rd, MatlockSK36A197909/07/19791Adultvc57_danes_bc_data
Comibaena bajulariaCarvers Rocks, Hartshorne, SwadlincoteSK32G197919/06/19791Adultvc57_danes_bc_data
Comibaena bajulariaAskew Grove, ReptonSK32D197626/06/19761Adultvc57_danes_bc_data
Comibaena bajulariaAskew Grove, ReptonSK32D197626/06/19761Adultvc57_danes_bc_data
Comibaena bajulariaField Close, Hilton, Burton on TrentSK23K197503/07/19751Adultvc57_danes_bc_data

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