11.002 BF175 - Psychidae - Naryciinae - Narycia duplicella
11.002 BF175  – White-speckled Bagworm  – Narycia duplicella  – (Goeze, 1783)
Adult Micro:  CAT 1 – Distinctive species unlikely to be confused with others –       Leaf-miner:  CAT A – Recorded accepted without the leaf or a photo –       Larval Case:  C2 – Photo or specimen of larval case/plant required –      
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Black – Uncertain/Unknown – Insufficient Data   
Taxonomy:   Micro   >>  Psychidae  >> Naryciinae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: The head is dark blackish-brown and forewings are also blackish-brown with scattered yellowish-cream markings often forming slight cross-bands.
Distribution:  (Last record: 2026 at Gleadless Valley )  –  Fairly common across Britain, and likely to be local in places throughout the county. Insufficient data. Larval cases found February 2026 Gleadless Valley.
General Comment: The larva live in a case and attaches itself to a fence, or tree trunk or other lichen covered surface. They are a different shape to the similar looking cases of Luffia lapidella
Flight Period: June /  July –  June- July  – but can be disturbed during the day Photographed: Yes –  Photographed By: Will Soar (Adult); Pete Mella (Larval cases)  © All Rights Reserved
*** Last updated on 22 February 2026 by TD ***
Wingspan: 7-12mm
Food Plant: Algae on trees and fences etc.
Last Recorded Year: 2026
Last Recorded By – Pete Mella (Larval cases)
Last Recorded General Area – Gleadless Valley

Selected Images:  Kings Newton, June 2018 – photos by Will Soar / Larval Cases February 2026 Gleadless Valley – Pete Mella©

 
 


Temporal Distribution Chart
Adults: (between 2018 - 2018)
(click legend below to show/hide datasets)
 

Distribution Map for Narycia duplicella

Found 2 records
    ↳ 1 from 2026+
    ↳ from 2020 - 2025
    ↳ 1 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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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 – Narycia duplicella

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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: Narycia duplicella
( data includes both Larvae and Adult Stages )

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

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

Hectad (10kmx10km) Coverage: Narycia duplicella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Narycia duplicella

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 - Narycia duplicella – 2 records available

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

Site NameTetradDateCountStageRecorderSourceRecordKey
Gleadless Valley LNRSK38R14/02/20261caseMella, Petevc57_irecords_extractiBRC50020917
Main Street, Kings NewtonSK32Y05/06/20181AdultSoar, Willvc57_irecords_extractiBRC34059673

 
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