Acrocercops brongniardella - on Oak - 7th July 2025 - Wyver Lane - Dave Evans
15.019 BF313  – Oak Cloud  – Acrocercops brongniardella  – (Fabricius, 1798)
Adult Micro:  CAT 1 – Distinctive species unlikely to be confused with others –       Leaf-miner:  CAT A – Recorded accepted without the leaf or a photo –       Larval Case:  C1 – Distinctive Species –      
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Black – Uncertain/Unknown – Insufficient Data        purple – Leaf-miner
Taxonomy:   Micro   >>  Gracillariidae  >> Gracillariinae
** Species write up required **
Other Name/s: Brown Oak Slender
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Its forewings are brownish-fuscous with four slender, oblique, white bars that are edged with black. A distinguishing feature is a black “projecting hook” in the apical cilia (hairs) of the wing.
Distribution:  (First record: 7 May 2025 at Markham Vale (North Tip) )  –  (Last record: 15 August 2025 at Graves park Arboretum, Norton Lees )  –  Uncertain – Likely to be a species overlooked and one that may well be spreading into the recording area from nearby counties.  The first record of the species for the VC57 was from Markham Vale 7/5/2025 – since a further ten records from four sites. – one recorded from Norton Lees on 29/6/2025 was first confirmed record of an adult.
General Comment: None
Flight Period: July –  Univoltine and can overwinter appearing during the following Spring. Mine Period:  May /  June
Mine Period Additional: None.
Mine ID Difficulty:  Green Mine Leaf – Easy to identify, generally the leaf mine is distinctive and unlikely to be confused with other species.
Mine Type/s:  Gallery, Blotch
Mine Feeding Method/s: Not Recorded
Mine Comment: 

The larvae feed on Oak and characteristically make twisting initial mines as a tortuous, silvery gallery in the upper epidermis, which then join to form a large papery blotch. There are multiple galleries, often several on a single leaf. Larvae feed on the palisade parenchyma within this communal mine. Pupation usually occurs outside the mine, in a silken cocoon amongst detritus.  Moth Activity: Cathemeral   – but can be disturbed during the day Photographed: Yes –  Photographed By: Mark Radford, Pete Mella, Dave Evans  © All Rights Reserved

*** Last updated on 16 November 2025 by TD ***
Wingspan: 8-10mm
Food Plant: Oak
Last Recorded Year: 2025
First Recorded Year: 2025
Last Recorded By – Pete Mella
Last Recorded General Area – Graves park Arboretum, Norton Lees

Selected Images:  

Markham Vale – First VC57 record 7th May 2025 – Mark Radford© / Norton Lees 29/6/2025 – Pete Mella©



Temporal Distribution Chart
Adults: (between 2025 - 2025)  |  Immatures: (between 2025 - 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 Acrocercops brongniardella

Found 11 records
    ↳ from 2026+
    ↳ 11 from 2020 - 2025
    ↳ 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 – Acrocercops brongniardella

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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: Acrocercops brongniardella
( data includes both Larvae and Adult Stages )

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

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

Hectad (10kmx10km) Coverage: Acrocercops brongniardella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Acrocercops brongniardella

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
Acrocercops brongniardella
( 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 - Acrocercops brongniardella – 11 records available

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

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Derwent Park SK33N 08/10/2025 10 mine Shervill, Andrew vc57_irecords_extract iBRC45857130
Graves Park, Arboretum SK38K 15/08/2025 1 mine Mella, Pete vc57_irecords_extract iBRC44507784
Graves Park SK38L 15/08/2025 1 mine Mella, Pete vc57_irecords_extract iBRC44507709
DWT Wyver Lane SK34P 13/08/2025 1 mine (empty) Evans, Dave vc57_irecords_extract iBRC44440750
DWT Wyver Lane SK34P 06/08/2025 1 mine (empty) Evans, Dave vc57_irecords_extract iBRC44213477
Hazlebarrow Farm SK38Q 07/07/2025 1 mine Mella, Pete vc57_irecords_extract iBRC43107928
Graves Park, Sheffield SK38L 30/06/2025 1 mine Mella, Pete vc57_irecords_extract iBRC42819816
Norton Lees, Sheffield SK38L 29/06/2025 1 adult Mella, Pete vc57_irecords_extract iBRC42819696
DWT Wyver Lane SK34P 10/06/2025 4 mine (empty) Evans, Dave vc57_irecords_extract iBRC42186750
DWT Wyver Lane SK34P 03/06/2025 8 mine (tenant Evans, Dave vc57_irecords_extract iBRC42046066
Markham Vale North Tip SK47L 07/05/2025 19 mine Radford, Mark vc57_irecords_extract iBRC41438825

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