Dahlica triquetrella - 10th Feb 2026 - Bolsover Churchyard - Mark Radford .
11.003 BF176  – Narrow Lichen Case-bearer  – Dahlica triquetrella  – (Hübner, 1813)
Adult Micro:  CAT 3 – Very rare or scarce species (includes very scarce adventives/immigrants) – confusion with leaf mines       Leaf-miner:  CAT A – Recorded accepted without the leaf or a photo –       Larval Case:  C3 – As C2 but bred moth required – reared and possibly dissected      
PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Verification Notes: Good quality photos required to support record

Brown –  Significant Record / Very Rare / Vagrant         day-flying – Day-flying
Taxonomy:   Micro   >>  Psychidae  >> Naryciinae
Other Name/s: Narrow Lichen Bagworm
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Hard to distinguish between other related species
ID pointers: The only way to be certain of the ID of larval cases is to examine the exuviae head-plate under a microscope. Winged males do occur in Europe, but only the parthenogenetic (does not require the male to reproduce) wingless female of Dahlica triquetrella has been recorded in Britain. 
Distribution:  (First record: 8 February 2026 at Eckington Cemetry )  –  (Last record: 10 February 2026 at Bolsover Churchyard )  –  A new species for VC57 Derbyshire when larval cases were discovered at Eckington Cemetery on 8th Feb 2026. Further larval cases were found at Bolsover Churchyard on 10th Feb 2026.
General Comment: The larval cases can be found from Jan-March, May-June and Aug – Oct – The wingless female briefly during April – May
Flight Period: April /  May –  The wingless females can be found very briefly during April and May  – but can be disturbed during the day Photographed: Yes –  Photographed By: Mark Radford  © All Rights Reserved
*** Last updated on 28 February 2026 by TD ***
Food Plant: Lichen and decaying plants
Last Recorded Year: 2026 – larval cases
First Recorded Year: 2026 – Larval cases
Last Recorded By – Mark Radford
Last Recorded General Area – Bolsover Churchyard

Selected Images:  

Eckington Cemetry and Bolsover Churchyard – Feb 2026 – Mark Radford© 1st VC57 records



Temporal Distribution Chart
Immatures: (between 2026 - 2026)
(click legend below to show/hide datasets)

Distribution Map for Dahlica triquetrella

Found 3 records
    ↳ 3 from 2026+
    ↳ 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 for – Dahlica triquetrella

⚠️ 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.

Visit NBN Site


Monthly Records By Year: Dahlica triquetrella
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Dahlica triquetrella
( data is based on 'Adult' stage records only )

First/Last Recorded Dates: Dahlica triquetrella
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: Dahlica triquetrella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Dahlica triquetrella
AGR: 0%   |   Total % Change: 0%
Dahlica triquetrella
Insufficient records/data for an AGR analysis
Years Analysed: 2000 – 2026

Hectad (10kmx10km) Coverage: Dahlica triquetrella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Dahlica triquetrella

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 - Dahlica triquetrella – 3 records available

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

Site NameTetradDateCountStageRecorderSourceRecordKey
Eckington CemeterySK48F10/02/2026108larval caseRadford, Markvc57_irecords_extractiBRC49801424
Eckington CemeterySK48F10/02/2026108larvaRadford, Markvc57_irecords_extractiBRC49890612
Bolsover churchyardSK47Q08/02/202617larval caseRadford, Markvc57_irecords_extractiBRC49890620

Scroll to Top