73.243 BF2183  –  Noctuidae –  Hadeninae – Orthosia miniosa – Blossom Underwing – ([Denis & Schiffermüller], 1775) Adult Macro:  CAT 1 – Distinctive species unlikely to be confused with others –       PDF Icon – click for Adult Macro Verification Guidelines

Brown –  Significant Record / Very Rare / Vagrant    
Taxonomy:   Macro   >>  Noctuidae  >> Hadeninae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: The hindwing is pinkish white, and shows up brightly at night around the moths trap. This feature easily distinguishes the species from other related Orthosia. The upper-wing is a warm sandy or pinkish brown colour. The central band is usually a deeper shade.
Distribution:  (First record: 2 April 2021 at Swadlincote )  –  (Last record: 26 April 2025 at Cromford )  –  A new species for the county and for the VC57. The late Dave Budworth, who was the county moth recorder at the time, recorded a single specimen to his garden light trap at Swadlincote on 2 April 2021. It is one of the less common of the spring macro moths, being quite scarce away from southern England and Wales. This record was discovered whilst the recording team were verifying outstanding Derbyshire moth records.The 2nd VC57 record was from Cromford 3/4/2025 by Clive Ashton. The 3rd record also came from Cromford on 26th April 2025 by Clive Ashton.
Flight Period: March /  April /  –  On the wing March – late April Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Clive Ashton  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 31-36mm
Forewing: 15-17mm
Food Plant: Oak (Quercus).
Last Recorded Year: 2025
First Recorded Year: 2021
Last Recorded By – Clive Ashton
Last Recorded General Area – Cromford

Selected Images: 

Cromford 2nd record for VC57 – 3/4/2025 – Clive Ashton© / Cromford 3rd record 26/4/25 Clive Ashton©



Distribution Map for Orthosia miniosa

Found 3 records
    ↳ 2 from After 2025
    ↳ 1 from 2020 - 2024
    ↳ 0 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 – Orthosia miniosa

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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: Orthosia miniosa
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Orthosia miniosa
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 24 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 2025, reaching above average levels. The lowest population point occurred near 2021, 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: Orthosia miniosa
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Orthosia miniosa
( 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 - Orthosia miniosa – 3 records available

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

Site NameTetradDateCountStageSource
upper cromford gardenSK25Y03/04/20251adultvc57_irecords_extract
upper cromford gardenSK25Y26/04/20251adultvc57_irecords_extract
Wood Lane, Newhall, SwadlincoteSK22V02/04/20211adultDanes_2019-2021

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