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49.319 BF1275  – Orange-spot Tansy Moth  – Dichrorampha flavidorsana  – Knaggs, 1867
Adult Micro:  CAT 2 – Can be confused with other species –      
PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Verification Notes: If recorded away from food plant then CAT 4 Gen Det required (National Grade 4)

Brown –  Significant Record / Rare / Vagrant    
Taxonomy:   Micro   >>  Tortricidae  >> Olethreutinae
** Photograph required / Identification write up required **
Other Name/s: Narrow-blotch Drill
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Dichrorampha alpinana(Orange-spot Daisy Moth); Dichrorampha petiverella(Yellow-spot Yarrow Moth)
Distribution:  No records since July 1985 Long Eaton  (Harrison & Sterling)
General Comment: If recorded away from food plant then CAT 4 Gen Det required (National Grade 4)
Flight Period: June /  July –  Generally flies after dark Moth Activity: Cathemeral   – active from dusk and attracted to light Photographed: No –   Photographed By: Not Recorded
*** Last updated on 23 July 2026 by TD ***
Wingspan: 13-15mm
Food Plant: Tansy
Last Recorded Year: 1985 (July)
Last Recorded By – Harrison and Sterling
Last Recorded General Area – Long Eaton

Possible Future Content


Images of Interest



Temporal Distribution Chart
Adults: (between 1985 - 1985)
(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.


Changes in First and Last Recorded Activity Dates Over Time
Activity Data Range: 1985 – 1985
Earliest Appearance: 1st June (in 1985)
Latest Appearance: 1st June (in 1985)
This chart presents a time-series summary of recorded observations. It is based on available records at the time of analysis and will evolve as further data are added. The rolling mean provides a smoothed representation of variation in recorded activity over time. Annual record totals are shown for context; years with fewer records may provide a less complete representation of activity than years with higher recording intensity. Interpretation should consider that apparent trends may reflect both biological change and variation in recording effort.

Distribution Map for Dichrorampha flavidorsana

Found 1 records
    ↳ from 2026+
    ↳ from 2020 - 2025
    ↳ 1 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 – Dichrorampha flavidorsana

⚠️ 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: Dichrorampha flavidorsana
( data includes both Larvae and Adult Stages )

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

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

Hectad (10kmx10km) Coverage: Dichrorampha flavidorsana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Dichrorampha flavidorsana

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 - Dichrorampha flavidorsana – 1 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Long Eaton SK43W 01/06/1985 1 Adult Harrison & Sterling old_documented_vc57_moth_data

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