Agromyza alnivora
Description
The larvae of the fly Agromyza alnivora mine the leaves of various species of Alder creating an upper surface gallery, narrow at first but, widening considerably towards the end.
Identification difficulty
Adult 
Leafmine 
ID guidance
Leafmine occurs on Alder. http://www.leafmines.co.uk/html/Diptera/A.alnivora.htm
Habitat
Where Alder, the larval foodplant is present.
When to see it
Mines may be encountered when Alder is in leaf especially in summer and early autumn.
UK Status
Widespread but rather local in Britain.
VC55 Status
Status in Leicestershire and Rutland not known.
Graham Calow
Stoney Stanton, Highgate Lodge Farm open access land
30 October 2020
leafmine on Alder
Graham Calow
Near Aston Lane, Sharnford
10 September 2018
leafmines on Alder
Graham Calow
Burbage Common
19 September 2018
leafmine on Alder
Graham Calow
Near Olive Close, Burbage
24 October 2018
leafmine on Alder
Peter Smith
Holywell Park, Loughborough
19 July 2018
Leaf mine on alder
Graham Calow
Burbage Common
19 September 2018
leafmine on Alder
Graham Calow
Stoney Stanton
14 October 2017
leafmine on Alder
Leicestershire & Rutland Map
Enter a town or village to see local records
MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015
UK Map
Graham Calow
Burbage Common
08 October 2017
leafmine on Alder
Graham Calow
Stoney Stanton
14 October 2017
leafmine on Alder
Peter Smith
Holywell Park, Loughborough
19 July 2018
Mine hardly seen on underside of leaf
Peter Smith
Holywell Park, Loughborough
19 July 2018
Backlit.
Graham Calow
Near Aston Lane, Sharnford
10 September 2018
leafmines on Alder
Graham Calow
Fosse Meadows, Sharnford
17 October 2018
leafmine on Alder
Graham Calow
Near Olive Close, Burbage
24 October 2018
leafmine on Alder
sue
Bagworth CP, lakes
22 September 2018
sue
Glenfield, County Hall
18 October 2018
Peter Smith
Cropston
10 November 2018
Leaf mine on alder
sue
Bagworth Beacon
07 October 2018
