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15.008X  – Caloptilia alchimiella/robustella

Black – Uncertain/Unknown – Insufficient Data   
Taxonomy:   Micro   >>  Gracillariidae  >> Gracillariinae
** This page is to record aggregated records only – see individual species pages for additional information **
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Caloptilia alchimiella – Oak Stilt; Caloptilia robustella – Shaded Oak Stilt
ID pointers: Both these species cannot be reliably determined in the field. They can only safely be separated by Gen Det examination. Please record as this aggregate if uncertain.
Distribution:  See separate species pages for further details
General Comment: None
Photographed: No –  Photographed By: Not Recorded
*** Last updated on 2 October 2025 by RP ***
Wingspan: 10-13mm
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded

Selected Images:  



Temporal Distribution Chart
Adults: (between 2024 - 2026)
(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.

Distribution Map for Caloptilia alchimiella/robustella

Found 5 records
    ↳ 1 from 2026+
    ↳ 4 from 2020 - 2025
    ↳ 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 - No LSID found for: Caloptilia alchimiella/robustella
This moth may be an aggregate and as such no specific records of distribution exist.


Monthly Records By Year: Caloptilia alchimiella/robustella
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Caloptilia alchimiella/robustella
( data is based on 'Adult' stage records only )

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

Hectad (10kmx10km) Coverage: Caloptilia alchimiella/robustella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Caloptilia alchimiella/robustella

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 - Caloptilia alchimiella/robustella – 5 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Midway, Derbys. SK32A 22/03/2026 1 adult Williams, Michael vc57_irecords_extract iBRC50749212
Midway, Derbys. SK32A 13/07/2025 1 adult Williams, Michael vc57_irecords_extract iBRC45151797
Midway, Derbys. SK32A 19/06/2025 1 adult Williams, Michael vc57_irecords_extract iBRC42543074
Midway, Derbys. SK32A 26/08/2024 1 adult Williams, Michael vc57_irecords_extract iBRC39954812
Midway, Derbys. SK32A 10/08/2024 1 adult Williams, Michael vc57_irecords_extract iBRC39954730

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