Blastobasis rebeli - 1st VC57 Record - 9th July 2026 - Cromford - Clive Ashton
41.005 BF875a  – Black-banded Masoner  – Blastobasis rebeli  – Karsholt & Sinev, 2004
Adult Micro:  CAT 3 – Very rare or scarce species (includes very scarce adventives/immigrants) – confusion with leaf mines      
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Brown –  Significant Record / Rare / Vagrant    
Taxonomy:   Micro   >>  Blastobasidae
Other Name/s: Marsh Dowd
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Common Masoner
ID pointers: Characterised by a distinctly dark, broad band stretching about one-third of the way down the forewing, which separates it from similar species.
Distribution:  First recorded in Hampshire in 1988. Since it has established expanding populations across southern English counties. A first VC57 Derbyshire record when one was attracted to light at a garden moth trap in Cromford on 9th July 2026, then another on the 10th August from Cromford by same recorder. A third record from Midway on 15/7/2026.
General Comment: None
Flight Period: July /  August –  one generation Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –   Photographed By: Clive Ashton  © All Rights Reserved
*** Last updated on 21 July 2026 by TD ***
Wingspan: c13mm
Food Plant: Unknown
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded

Images of Interest:



Temporal Distribution Chart
Adults: (between 2026 - 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 Blastobasis rebeli

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

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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 – Blastobasis rebeli

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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: Blastobasis rebeli
( data includes both Larvae and Adult Stages )

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

First/Last Recorded Dates: Blastobasis rebeli
Adult-only & Anything [Larvae, Pupae, Adult, Mines]

Shading shows moth presence between dates

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Recordings By Year: Blastobasis rebeli
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Blastobasis rebeli
AGR: 0%   |   Total % Change: 0%
Blastobasis rebeli
Insufficient records/data for an AGR analysis
Years Analysed: 2000 – 2026

Hectad (10kmx10km) Coverage: Blastobasis rebeli
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Blastobasis rebeli

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 - Blastobasis rebeli – 3 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 15/07/2026 1 adult Williams, Michael vc57_irecords_extract iBRC54965038
hallcroft middleton SK25T 10/07/2026 1 adult Ashton, Clive vc57_irecords_extract iBRC54741364
upper cromford garden SK25Y 09/07/2026 1 adult Ashton, Clive vc57_irecords_extract iBRC54704089

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