15.025 BF301 - Gracillariidae - Gracillariinae - Parornix species (betulae)
15.025 BF301  – Birch Parornix  – Parornix betulae  – (Stainton, 1854)
Adult Micro:  CAT 4 – Dissection required – Gen-Det-Reqd       Leaf-miner:  CAT L – The leaf or a Photo required – reared and possibly dissected      
PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data        purple – Leaf-miner
Taxonomy:   Micro   >>  Gracillariidae  >> Gracillariinae
Other Name/s: Brown Birch Slender
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
ID pointers: All parornix species require particular care in identification. Adults are all similar to each other and are best determined by either Gen. Det or by rearing through the food plant.
Distribution:  (Last record: 8 July 2019 at Ramsley Moor )  –  With very few confirmed records the VC57 status remains uncertain but it is probably locally common on Birch. A leaf miner.
General Comment: None
Flight Period: May /  August –  On the wing during May and August in two generations. Mine Period:  June /  September /  October
Mine Period Additional: The larvae of this species initially create gallery mines in the lower epidermis of birch (Betula spp.) leaves, leading to a Phyllonorycter-type mine, but discoloured brown. The larvae later feed within downward folds, usually at the tip of the leaf, pupating in this site or on the ground.
Mine ID Difficulty: Not Recorded
Mine Type/s: Not Recorded
Mine Feeding Method/s: Not Recorded
Mine Comment: None.
Photographed: Yes –  Photographed By: Steve Orridge  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 9-10mm
Food Plant: Birch (Betula)
Last Recorded Year: 2019
Last Recorded By – Andrew Watchorn (iRecord)
Last Recorded General Area – Ramsley Moor

Selected Images:  Buxton, Derbyshire – Steve Orridge ©



Temporal Distribution Chart
Adults: (between 2012 - 2012)  |  Immatures: (between 2008 - 2025)
(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 Parornix betulae

Found 8 records
    ↳ from 2026+
    ↳ 2 from 2020 - 2025
    ↳ 6 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Mining
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 – Parornix betulae

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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.

Visit NBN Site


Monthly Records By Year: Parornix betulae
( data includes both Larvae and Adult Stages )

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

First/Last Recorded Dates: Parornix betulae
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: Parornix betulae
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Parornix betulae
AGR: 2.41%   |   Total % Change: 50%

Hectad (10kmx10km) Coverage: Parornix betulae
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Parornix betulae

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.

Mine Periods – Indicative –vs– Recorded Data
Parornix betulae
( data includes both Larvae and Adult Stages )

Mine 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 mine periods [month/s]. The coloured lines represent the actual months seen mining, from site observation records received between 2020-2026.

Records Behind the Map and Charts - Parornix betulae – 8 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Sunnydale LNR SK33G 07/10/2025 1 mine Shervill, Andrew vc57_irecords_extract iBRC45844398
Darwin Forest SK26X 04/10/2025 2 mine (empty) Evans, Dave vc57_irecords_extract iBRC45786885
Ramsley Moor and Reservoir SK27X 08/07/2019 1 mine Watchorn, Andrew vc57_irecords_extract iBRC29266885
Ramsley Moor and Reservoir SK27X 20/10/2015 1 Larva Watchorn, Andrew vc57_irecords_extract iBRC5589701
Bamford St,Ripley SK34Z 31/07/2012 1 Adult Thorpe, Steve vc57_danes_bc_data LC000334001CP0EH
Howden Resr SK19L 25/08/2010 1 Larval Mine S.H. Hind vc57_danes_bc_data LC000334001CP090
Hopton Wood NR, Cromford SK25T 16/10/2009 1 Larval Mine Dave Budworth;S.A. Orridge;S.H. Hind vc57_danes_bc_data LC000334001COT0U
Monsall Trail, Buxton SK17L 14/09/2008 1 Larval Mine S.H. Hind vc57_danes_bc_data LC000334001COSNN

 
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