35.146 BF776 – Common Groundling – Teleiopsis diffinis – (Haworth, 1828)
Adult Micro: CAT 2 – Can be confused with other species –
– click for General Verification Guidelines | – click for Specific Verification Guidelines
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Uncertain/Unknown – Insufficient Data
– care required in the identification process, as confusion with similar species is likely – quality photographs required. ID pointers: A fairly long-wing species. Forewing greyish brown or greyish, variably spotted blackish and whitish. There are three obliquely place raised black spots, sometimes joined into a cross-line.
Distribution: (Last record: 22 August 2025 at Glossop ) – Less than 10 reported records records since 1984. Latest from Cromford 29/6/2024. On Sheep’s Sorrel and from Glossop 22/8/2025
General Comment: None *** Last updated on 2 October 2025 by RP ***
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Glossop
Selected Images: 4/9/2015 – Buxton, Derbyshire – Steve Orridge© / 29/6/2024 – Cromford 2024 Clive Ashton© / Glossop (Aug 2025) Christian Heintzen©
Image Gallery
Temporal Distribution Chart
Adults: (between 1905 - 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 Teleiopsis diffinis
Found 11 records
↳ from 2026+
↳ 7 from 2020 - 2025
↳ 4 from Before 2020
↳ from 2026+
↳ 7 from 2020 - 2025
↳ 4 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 – Teleiopsis diffinis
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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.
Monthly Records By Year:
Teleiopsis diffinis
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Teleiopsis diffinis
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Teleiopsis diffinis
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Teleiopsis diffinis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Teleiopsis diffinis
AGR: 1.55% | Total % Change: 16.7%
Hectad (10kmx10km) Coverage: Teleiopsis diffinis
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Teleiopsis diffinis
Teleiopsis diffinis
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 - Teleiopsis diffinis – 11 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| Shaw Farm, New Mills VC | SJ98Y | 31/08/2025 | 1 | adult | Hind, Steve | vc57_irecords_extract | iBRC44983932 |
| Glossop, Moorfield, Wood's Cabin | SK09L | 24/08/2025 | 1 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC48746883 |
| Glossop, Hague Street, Hay Meadow | SK09G | 21/08/2025 | 1 | adult | Heintzen, Christian | vc57_irecords_extract | iBRC48744041 |
| Buxton SK, UK | SK07S | 13/08/2025 | 1 | Adult | Orridge, Steve | vc57_irecords_extract | iBRC50542355 |
| Ladycroft Ave, Buxton | SK07S | 12/08/2025 | 2 | adult | Orridge, Steve | vc57_irecords_extract | iBRC48187013 |
| Gang Mine, Cromford | SK25X | 09/06/2025 | 1 | adult | Ashton, Clive | vc57_irecords_extract | iBRC42153713 |
| upper cromford garden | SK25Y | 29/06/2024 | 1 | adult | Ashton, Clive | vc57_irecords_extract | iBRC36751109 |
| Birch Vale | SK08I | 25/08/2019 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC35072633 |
| Ladycroft Ave, Buxton | SK07S | 04/09/2015 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC34801565 |
| Ladycroft Ave | SK07S | 04/09/2015 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC48844939 |
| Willington area, Derby | SK22Z | 02/04/1905 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001COQH2 |