35.146 BF776  – Common Groundling – Teleiopsis diffinis – (Haworth, 1828) Adult Micro:  CAT 2 – Can be confused with other species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data   
Taxonomy:   Micro   >>  Gelechiidae  >> Gelechiinae
Other Name/s: Large Groundling
ID Difficulty:  amber  – 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
Flight Period: May /  June /  July /  August /  September –  On the wing in May – September Moth Activity: Nocturnal  Crepuscular   – but often seen by day Photographed: Yes –  Photographed By: Steve Orridge, Clive Ashton, Christian Heintzen  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 14-16mm
Food Plant: Sheep’s sorrel (Rumex acetosa).
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©



Monthly Occurrence For Years Below
Adults: (between 1905 - 2025)
(click legend below to show/hide datasets)

Distribution Map for Teleiopsis diffinis

Found 10 records
    ↳ from 2026+
    ↳ 6 from 2020 - 2025
    ↳ 4 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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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.

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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: 1.84%   |   Total % Change: 20%

Hectad (10kmx10km) Coverage: Teleiopsis diffinis
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
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 – 10 records available

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

Site NameTetradDateCountStageRecorderSourceRecordKey
Shaw Farm, New Mills VCSJ98Y31/08/20251adultHind, Stevevc57_irecords_extractiBRC44983932
Glossop, Moorfield, Wood's CabinSK09L24/08/20251adultHeintzen, Christianvc57_irecords_extractiBRC48746883
Glossop, Hague Street, Hay MeadowSK09G21/08/20251adultHeintzen, Christianvc57_irecords_extractiBRC48744041
Ladycroft Ave, BuxtonSK07S12/08/20252adultOrridge, Stevevc57_irecords_extractiBRC48187013
Gang Mine, CromfordSK25X09/06/20251adultAshton, Clivevc57_irecords_extractiBRC42153713
upper cromford gardenSK25Y29/06/20241adultAshton, Clivevc57_irecords_extractiBRC36751109
Birch ValeSK08I25/08/20191adultHewitt, Janevc57_irecords_extractiBRC35072633
Ladycroft Ave, BuxtonSK07S04/09/20151adultOrridge, Stevevc57_irecords_extractiBRC34801565
Ladycroft AveSK07S04/09/20151adultOrridge, Stevevc57_irecords_extractiBRC48844939
Willington area, DerbySK22Z02/04/19051AdultVC57 Derbyshire Recordervc57_danes_bc_dataLC000334001COQH2

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