– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Significant Record / Very Rare / Vagrant 
– Day-flying
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: Oxypteryx unicolorella (Bronze Neb)
Buxton (2022) Anthony Marriott©
Image Gallery
No gallery images found for this moth.
Distribution Map for Monochroa tenebrella
↳ 2 from After 2025
↳ 1 from 2020 - 2024
↳ 0 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 – Monochroa tenebrella
⚠️ 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:
Monochroa tenebrella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Monochroa tenebrella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Monochroa tenebrella
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Monochroa tenebrella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Monochroa tenebrella
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Monochroa tenebrella
Counts for the current year (2025) are pro-rated based on data available up to month 9 (September) to provide a full-year equivalent.
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: Monochroa tenebrella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Monochroa tenebrella
Monochroa tenebrella
( 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 - Monochroa tenebrella – 3 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| High Peak SKEW, UK | SK08F | 25/06/2025 | 1 | Adult | vc57_irecords_extract |
| Torside | SK09Z | 19/06/2025 | 1 | adult | vc57_irecords_extract |
| Lightwood | SK07M | 10/06/2022 | 1 | adult | vc57_irecords_extract |