35.143 BF774  –  Gelechiidae –  Gelechiinae – Teleiodes luculella – Crescent Groundling – (Hübner, [1813]) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data        day-flying – Day-flying
Taxonomy:   Micro   >>  Gelechiidae  >> Gelechiinae
Other Name/s: White Crescent
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Forewing dark grey to blackish, mottled with a large semi-circular whitish blotch towards the base of the forewing and a white spot along the costa at about two thirds.
Distribution:  (Last record: 21 June 2024 at Mickleover, Derby )  –  Uncertain/Unknown due to insufficient data – very few records – only one report in 2024 – two previous records in 2005.
Flight Period: May /  June /  –  On the wing in May – June Moth Activity: Cathemeral   – and is attracted to light Photographed: Yes –  Photographed By: Bryan Barnacle  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 10-12mm
Food Plant: Oak (Quercus).
Last Recorded Year: 2024
Last Recorded By – Christine Maughan
Last Recorded General Area – Mickleover, Derby

Selected Images:  Froggatt, Derbyshire – Bryan Barnacle©



Distribution Map for Teleiodes luculella

Found 10 records
    ↳ 0 from After 2025
    ↳ 3 from 2020 - 2024
    ↳ 7 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 – Teleiodes luculella

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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: Teleiodes luculella
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Teleiodes luculella
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 21 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 8 (August) 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 2004, reaching above average levels. The lowest population point occurred near 2004, 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: Teleiodes luculella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Teleiodes luculella
( 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 - Teleiodes luculella – 10 records available

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

Site NameTetradDateCountStageSource
Mickleover gardenSK33C21/06/20241adultvc57_irecords_extract
FroggattSK27N18/06/20221adultvc57_irecords_extract
Froggatt, Hope ValleySK27N18/06/20221adultvc57_irecords_extract
Elm Wood,DerbySK33R22/05/20101Adultvc57_danes_bc_data
Main Street, Kings NewtonSK32Y13/07/20051Adultvc57_irecords_extract
Foremark Resr, TicknallSK32H09/07/20051Adultvc57_danes_bc_data
Main St,Kings Newton,MelbourneSK32Y13/07/20051Adultvc57_danes_bc_data
Ticknall Limeyards, Calke ParkSK32R17/06/20051Adultvc57_irecords_extract
Ticknall Limeyards,TicknallSK32R17/06/20051Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V09/06/20041Adultvc57_danes_bc_data

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