49.343 BF1262
– Rusty Acorn Piercer – Cydia amplana – Hübner, 1799
Adult Micro:
CAT 2
– Can be confused with other species –
– click for General Verification Guidelines |
– click for Specific Verification Guidelines
Verification Notes: Good photographs required to support the record.
– click for General Verification Guidelines |
– click for Specific Verification Guidelines
Verification Notes: Good photographs required to support the record.
– Significant Record / Rare / Vagrant
– Migrant
– care required in the identification process, as confusion with similar species is likely – quality photographs required.
ID pointers: Features a highly distinctive peachy-brown ground colour with a dark blotch on the lower trailing edge of the forewing. Very variable with areas of vibrant rusty colouration.
Distribution:
First found in Devon in 1990, a rare migrant, with majority of records from Dorset and Devon. Likely to be spreading as more immigrants arriving in recent years due to climate weather systems sweeping up from mainland Europe. It has experienced significant influxes and has established breeding resident populations across southern England and East Anglia.
A first record for VC57 Derbyshire, when one was attracted to MV light at Sandiacre and recorded by Emily Milnes. This species has been on our radar for sometime.
General Comment: None
*** Last updated on 9 August 2026 by TD ***
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded
Possible Future Content
Images of Interest:
Image Gallery
Temporal Distribution Chart
(click legend below to show/hide datasets)
This chart summarises all available historical occurrence records collated by ISO week of the year. It reflects recorder effort and sampling distribution as well as true biological activity, and should be interpreted as an indicative pattern of seasonal occurrence rather than a statistically controlled abundance or phenology model.
Changes in First and Last Recorded Activity Dates Over Time
Activity Data Range:
– –
–
Earliest Appearance:
No useable dates available
Latest Appearance:
No useable dates available
This chart presents a time-series summary of recorded observations. It is based on available records at the time of analysis and will evolve as further data are added. The rolling mean provides a smoothed representation of variation in recorded activity over time. Annual record totals are shown for context; years with fewer records may provide a less complete representation of activity than years with higher recording intensity. Interpretation should consider that apparent trends may reflect both biological change and variation in recording effort.
Distribution Map for Cydia amplana
No records foundIf 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 – Cydia amplana
⚠️ 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:
Cydia amplana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Cydia amplana
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Cydia amplana
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: Cydia amplana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Cydia amplana
AGR: 0% | Total % Change: 0%
Cydia amplana
Insufficient records/data for an AGR analysis
Years Analysed: 2000 – 2026
Hectad (10kmx10km) Coverage: Cydia amplana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Cydia amplana
Cydia amplana
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 - Cydia amplana – 0 records available
Listed by Year - descending - scroll across to see all table columns
No records found for Cydia amplana.