70.297 BF1665 – Grass Emerald – Pseudoterpna pruinata – (Walker, 1863)
Adult Macro: CAT 2 – Can be confused with other species – Good photographs may be required – 
– click for Adult Macro Verification Guidelines
– click for Adult Macro Verification Guidelines
– Significant Record / Very Rare / Vagrant
– easy to identify, generally distinctive and unlikely to be confused with other species.ID pointers: The pale bluish tinged green forewings are characteristic. The darker post-median lines also help to identify this species
Distribution: (Last record: 19 June 2025 at High Peak ) – A resident that is generally uncommon and locally distributed in Derbyshire. General loss of suitable habitat seems to be the cause of losses in population of what has never been a common species in the county. The central Coal Measures of Derbyshire were once the main stronghold and relict populations may still exist.
General Comment: None *** Last updated on 14 January 2026 by TD ***
Forewing: 14-19mm
Last Recorded Year: 2025
Last Recorded By – PatFW (iNature)
Last Recorded General Area – High Peak
Selected Images:
Markham Vale – 15th August 2023 – Sid Morris© / High Peak 19th June 2025 PatFW
Image Gallery
No gallery images found for this moth.
Temporal Distribution Chart
Adults: (between 1967 - 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 Pseudoterpna pruinata
Found 19 records
↳ from 2026+
↳ 2 from 2020 - 2025
↳ 17 from Before 2020
↳ from 2026+
↳ 2 from 2020 - 2025
↳ 17 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 – Pseudoterpna pruinata
⚠️ 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:
Pseudoterpna pruinata
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Pseudoterpna pruinata
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Pseudoterpna pruinata
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: Pseudoterpna pruinata
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Pseudoterpna pruinata
AGR: 0% | Total % Change: 0%
Hectad (10kmx10km) Coverage: Pseudoterpna pruinata
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Pseudoterpna pruinata
Pseudoterpna pruinata
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 - Pseudoterpna pruinata – 19 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| Shallcross Avenue, High Peak, England, GB | SK07E | 19/06/2025 | 1 | Adult | Pat FW | vc57_irecords_extract | iBRC42961965 |
| Markham Vale Derbyshire | SK47K | 15/08/2023 | 1 | adult | Morris, Sid | vc57_irecords_extract | iBRC40230673 |
| Lang Rd, Alvaston, Derby | SK33R | 21/07/1992 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OHLPI |
| Whitwell Wood,Whitwell | SK57E | 20/07/1990 | 1 | Adult | R.F. Botterill | vc57_danes_bc_data | LC000334001OIUN2 |
| Whitwell Wood,Whitwell | SK57E | 20/07/1990 | 1 | Adult | R.F. Botterill | vc57_danes_bc_data | LC000334001WOPRM |
| Shardlow Hall, Shardlow, Long Eaton | SK43F | 09/07/1984 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OHZ4O |
| Askew Grove, Repton | SK32D | 29/07/1977 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001OHG28 |
| Askew Grove, Repton | SK32D | 29/07/1977 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001WPWSL |
| Field Studies Building, Drakelow Nature Trail | SK21J | 05/07/1977 | 1 | Adult | Dave Budworth | vc57_danes_bc_data | LC000334001OIKEP |
| Askew Grove, Repton | SK32D | 10/07/1976 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001OIJX8 |
| Askew Grove, Repton | SK32D | 10/07/1976 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001WP3DC |
| Askew Grove, Repton | SK32D | 09/07/1976 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001OHWXO |
| Askew Grove, Repton | SK32D | 09/07/1976 | 1 | Adult | D.A. Young | vc57_danes_bc_data | LC000334001WP3D9 |
| Field Studies Building, Drakelow Nature Trail | SK21J | 03/07/1976 | 3 | Adult | Dave Budworth | vc57_danes_bc_data | LC000334001OHWWI |
| Newbold Ave, Chesterfield | SK37R | 07/07/1970 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIHUQ |
| Gleadless area (site not precise) | SK38W | 07/07/1970 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIHUR |
| Welbeck Rd, Bolsover | SK47V | 03/08/1969 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OHW5M |
| Berry St, Hepthorne Lane, North Wingfield | SK46C | 31/07/1967 | 1 | Adult | J.H. Johnson | vc57_danes_bc_data | LC000334001WQ99E |
| Berry St, Hepthorne Lane, North Wingfield | SK46C | 23/07/1967 | 1 | Adult | J.H. Johnson | vc57_danes_bc_data | LC000334001WP81P |