Plutella xylostella       Eidophasia messingiella
18.003 BF465  –  Plutellidae – Plutella porrectella – Streaked Diamond-back Moth – (Linnaeus, 1758) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Green –  Rare / Uncommon / Scarce   
Taxonomy:   Micro   >>  Plutellidae
Other Name/s: Grey-streaked Smudge, Grey-streaked Diamond-back
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: A tiny species with upturned wingtips and three tiny dark bands at the tips of the antennae. Similar to xylostella but slightly larger. Overall a more creamy colour tone and slightly more streaked in markings
Distribution:  (Last record: 4 September 2024 at Cromford )  –  Status unsure but mainly in the central areas of the county and generally uncommon
General Comment: None Flight Period: May /  June /  July /  August /  September /  October –  On the wing late April – October in three generations Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 14-16mm
 Food Plant: Dame’s-violet (Sweet rocket or Damask violet)
Last Recorded Year: 2024
Last Recorded By – Clive Ashton
Last Recorded General Area – Cromford
Selected Images:  Belper, Derbyshire – Dave Evans ©

18.003 BF465 - Plutellidae - Plutella porrectella
Plutella porrectella – Dave Evans
18.003 BF465 - Plutellidae - Plutella porrectella

 
 

Image Gallery

18.003 BF465 - Plutella porrectella - August 2015 - Belper, Derbyshire - photo Dave Evans©

 

Distribution Map for Plutella porrectella

Found 59 records
    ↳ 22 from After 2025
    ↳ 26 from 2020 - 2024
    ↳ 11 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 – Plutella porrectella

⚠️ 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: Plutella porrectella
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Plutella porrectella
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: Plutella porrectella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Plutella porrectella
AGR: 0.94%   |   Total % Change: 22.7%


CUSUM Analysis: Plutella porrectella
About this chart: CUSUM (Cumulative Sum) charts track long-term trends in moth populations [ filtered by 'Adult' and 'Mine' life stages ] by showing whether each year’s counts are above or below the historical average. Even small shifts build up over time, making trends of growth, stability, or decline easier to see. CUSUM highlights trend-consistency — asking: “Across the years, have moth counts mostly stayed above or below average?”
The data sample has 15 gap year/s here (zero records) between 2000 and 2025. The moth may have been present in those gap years, but no data was available. Too many year-gaps may exaggerate or skew the chart.

Counts for the current year (2025) are pro-rated based on data available up to month 10 (October) to provide a full-year equivalent.

ⓘ Purple line rises = years better than average; falls = years worse than average.
Peak (best year) Trough (worst year) Growth periods Decline periods
Population peaked around 2025, reaching above average levels. The lowest population point occurred near 2022, showing a significant decline.

What the Y-axis "Cumulative Deviation" means: Cumulative Deviation shows the running total of how each year’s moth population count differs from the long-term average. i

Hectad (10kmx10km) Coverage: Plutella porrectella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Plutella porrectella
( 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 - Plutella porrectella – 59 records available

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

Site NameTetradDateCountStageSource
Norton Lees, SheffieldSK38L29/09/20251adultvc57_irecords_extract
Mickleover gardenSK33C19/09/20251adultvc57_irecords_extract
Mickleover gardenSK33C17/09/20251adultvc57_irecords_extract
Mickleover gardenSK33C12/09/20251adultvc57_irecords_extract
Mickleover gardenSK33C05/09/20253adultvc57_irecords_extract
upper cromford gardenSK25Y25/08/20251adultvc57_irecords_extract
Mickleover gardenSK33C22/08/20251adultvc57_irecords_extract
Mickleover gardenSK33C08/08/20251adultvc57_irecords_extract
Mickleover gardenSK33C03/08/20251adultvc57_irecords_extract
Mickleover gardenSK33C25/07/20251adultvc57_irecords_extract
BelperSK34N24/07/20251adultvc57_irecords_extract
upper cromford gardenSK25Y18/07/20251adultvc57_irecords_extract
Ladycroft Ave, BuxtonSK07S18/07/20251adultvc57_irecords_extract
Mickleover gardenSK33C04/07/20251adultvc57_irecords_extract
upper cromford gardenSK25Y31/05/20251adultvc57_irecords_extract
Mickleover gardenSK33C30/05/20252adultvc57_irecords_extract
Mickleover gardenSK33C29/05/20252adultvc57_irecords_extract
Mickleover gardenSK33C26/05/20251adultvc57_irecords_extract
Mickleover gardenSK33C24/05/20252adultvc57_irecords_extract
Mickleover gardenSK33C23/05/20251adultvc57_irecords_extract
Wingerworth, DerbyshireSK36Y21/05/20251adultvc57_irecords_extract
Mickleover gardenSK33C20/05/20251adultvc57_irecords_extract
Mickleover gardenSK33C12/09/20241adultvc57_irecords_extract
Mickleover gardenSK33C08/09/20241adultvc57_irecords_extract
upper cromford gardenSK25Y04/09/20241adultvc57_irecords_extract
upper cromford gardenSK25Y02/09/20241adultvc57_irecords_extract
upper cromford gardenSK25Y26/08/20241adultvc57_irecords_extract
Mickleover gardenSK33C18/08/20242adultvc57_irecords_extract
upper cromford gardenSK25Y09/08/20241adultvc57_irecords_extract
upper cromford gardenSK25Y26/07/20241adultvc57_irecords_extract
Mickleover gardenSK33C24/07/20242adultvc57_irecords_extract
Mickleover gardenSK33C16/07/20241adultvc57_irecords_extract
upper cromford gardenSK25Y17/05/20241adultvc57_irecords_extract
Woodland AveSK43R17/05/20241adultvc57_irecords_extract
Mickleover gardenSK33C07/10/20232adultvc57_irecords_extract
Mickleover gardenSK33C30/09/20231adultvc57_irecords_extract
Mickleover gardenSK33C24/09/20234adultvc57_irecords_extract
Mickleover gardenSK33C09/08/20231adultvc57_irecords_extract
Mickleover gardenSK33C29/07/20231adultvc57_irecords_extract
Mickleover gardenSK33C15/06/20231adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F10/06/20231adultvc57_irecords_extract
Buxton SK, UKSK07S18/08/20221Adultvc57_irecords_extract
Ladycroft Ave, BuxtonSK07S17/08/20221adultvc57_irecords_extract
Allestree, DerbySK33P27/07/20221adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F20/07/20211adultvc57_irecords_extract
Ferneydale AvenueSK07Q17/06/20211adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F09/06/20211adultvc57_irecords_extract
Woodland AveSK43R17/05/20201adultvc57_irecords_extract
Buxton (Cote Heath Allotments)SK07R13/08/20191adultDanes_2019-2021
Shirland - Hallfieldgate LaneSK35Z29/07/20191adultvc57_irecords_extract
Shirland - Hallfieldgate LaneSK35Z16/08/20131Adultvc57_irecords_extract
Bristol Rd,IlkestonSK44R26/10/20091Adultvc57_danes_bc_data
Bristol Rd,IlkestonSK44R28/05/20091Adultvc57_danes_bc_data
HolmewoodSK46F25/08/20061Adultvc57_danes_bc_data
Melbourne, DerbyshireSK32X06/06/20031adultvc57_irecords_extract
Knighton St, Hepthorne Lane, North WingfieldSK46C28/07/19821Adultvc57_danes_bc_data
Knighton St, Hepthorne Lane, North WingfieldSK46C25/07/19821Adultvc57_danes_bc_data
Newbold Ave, ChesterfieldSK37R06/05/19761Adultvc57_danes_bc_data
Overton Hall, Ashover, ChesterfieldSK36L09/05/19711Larvaevc57_danes_bc_data

 
Plutella xylostella       Eidophasia messingiella

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