42.002 BF877  –  Stathmopodidae – Stathmopoda pedella – Alder Signaller – (Linnaeus, 1761) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Brown –  Significant Record / Very Rare / Vagrant         day-flying – Day-flying
Taxonomy:   Micro   >>  Stathmopodidae
Other Name/s: Alder Signal
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Has a very distinctive resting posture. The yellowish and brown banded hind legs, with long spurs, are held almost at right angles to the body. The colour of the forewings can be yellow or yellowish orange with brown cross-banding. 
Distribution:  (First record: 26 July 2012 at Kings Newton )  –  (Last record: 17 July 2024 at Belper )  –  Not listed in Harrison & Sterling – Butterflies and Moths of Derbyshire. Status not known in the county but moth is extremely widespread but very local across south and south-eastern England with scattered populations further north. So maybe there are a few scattered colonies in the county. First recorded 2012. Only seven recorded.
Flight Period: July /  –  On the wing in July Moth Activity: Diurnal   – and is attracted to light Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 27 July 2025 by TD ***
Wingspan: 10-14mm
Food Plant: Alder (Alnus).
Last Recorded Year: 2024
First Recorded Year: 2012
Last Recorded By – Dave Evans
Last Recorded General Area – Belper

IMAGES BELOW:  Belper, Derbyshire (2024) & (2013) – Dave Evans©

Distribution Map for Stathmopoda pedella

Found 9 records
    ↳ 2 from After 2025
    ↳ 3 from 2020 - 2024
    ↳ 4 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.

******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******

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.

Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.


NBN Atlas UK Distribution for – Stathmopoda pedella

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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: Stathmopoda pedella
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Stathmopoda pedella
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: Stathmopoda pedella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stathmopoda pedella
AGR: 3.17%   |   Total % Change: 50%


CUSUM Analysis: Stathmopoda pedella
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 20 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 7 (July) 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 2024, 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: Stathmopoda pedella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Stathmopoda pedella
( 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 - Stathmopoda pedella – 9 records available

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

TaxonSite NameTetradYearDateCountStageSource
Stathmopoda pedellaMarkham Vale DerbyshireSK47K202529/06/20252adultvc57_irecords_extract
Stathmopoda pedellaMidway, Derbys.SK32A202530/06/20251adultvc57_irecords_extract
Stathmopoda pedellaBelperSK34N202417/07/20241adultvc57_irecords_extract
Stathmopoda pedellaFindern, Derbyshire, DEAZSK33A202426/06/20241adultvc57_irecords_extract
Stathmopoda pedellaFindern, Derbyshire, DEAZSK33A202119/07/20211adultvc57_irecords_extract
Stathmopoda pedellaMarlborough Road, Long Eaton, DerbysSK43X201916/07/20191adultvc57_irecords_extract
Stathmopoda pedellaBackgarden MarehaySK34Z201620/07/20161adultvc57_irecords_extract
Stathmopoda pedellaBelperSK34U201619/07/20161adultvc57_irecords_extract
Stathmopoda pedellaMain Street, Kings NewtonSK32Y201226/07/20121Adultvc57_irecords_extract

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