63.063 BF1334a  –  Crambidae –  Scopariinae – Scoparia basistrigalis – Chequered Grey – (Knaggs, 1866) Adult Micro:  CAT 2 – Confusion Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Green –  Rare / Uncommon / Scarce   
Taxonomy:   Micro   >>  Crambidae  >> Scopariinae
** Photograph required / Identification write up required **
Other Name/s: Base-lined Grey
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Eudonia truncicolella (Peppered Grey); Scoparia ambigualis (Common Grey)
Distribution:  (Last record: 7 September 2022 at No location )  –  One of several Scoparia species that are very difficult to identify. It closely resembles S.ambigualis and so closer examination maybe required in some cases. DaNES – 7 records prior to 2010 / 6 accepted records Chesterfield 1964, Ambergate 1996, Marehay 21/7/2012; 1/7/2020; 30/7/2020; 9/7/2022.
Flight Period: July /  –  One generation Moth Activity: Cathemeral   – and is attracted to light Photographed: No –  Photographed By: Not Recorded
*** Last updated on 21 June 2025 by TD ***
Wingspan: 20-23mm
Food Plant: Moss
Last Recorded Year: 2022
Last Recorded By – DaNES
Last Recorded General Area – No location

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Distribution Map for Scoparia basistrigalis

Found 4 records
    ↳ 0 from After 2025
    ↳ 0 from 2020 - 2024
    ↳ 4 from Before 2020

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.

******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******

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.

Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.


NBN Atlas UK Distribution for – Scoparia basistrigalis

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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: Scoparia basistrigalis
( data includes both Larvae and Adult Stages )
No data returned from the database.

Monthly Counts By Year: Scoparia basistrigalis
( data is based on 'Adult' stage records only. )


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

Shading shows moth presence between dates

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Recordings By Year: Scoparia basistrigalis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Scoparia basistrigalis
AGR: 0%   |   Total % Change: 0%
Scoparia basistrigalis
Insufficient records/data for an AGR analysis
Years Analysed: 2000 – 2025
Scoparia basistrigalis
Insufficient records/data for a CUSUM analysis
Years Analysed: 2000 – 2025

Hectad (10kmx10km) Coverage: Scoparia basistrigalis
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Scoparia basistrigalis
( data includes Adult Stage only )

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 2020-2025.

Records Behind the Map and Charts - Scoparia basistrigalis – 4 records available

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

TaxonSite NameTetradYearDateCountStageSource
Scoparia basistrigalisBackgarden MarehaySK34Z201221/07/20121adultvc57_irecords_extract
Scoparia basistrigalisBamford St,RipleySK34Z201221/07/20121Adultvc57_danes_bc_data
Scoparia basistrigalisCrich Chase, Ambergate (site not precise)SK35L199627/06/19961Adultvc57_danes_bc_data
Scoparia basistrigalisSheepbridge Sports Ground, nr ChesterfieldSK37X196421/06/19641Adultvc57_danes_bc_data

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