Chromatomyia horticola/syngenesiae agg.
Chromatomyia syngenesiae and Chromatomyia horticola are leaf mining flies which form mines on a large number of plant species, these mines are indistinguishable from each other on certain hosts. They are treated as an aggregate, previously called Chromatomyia atricornis.
See the National Agromyzidae Recording Scheme website for further details of larva, adult insect and host plants for each species.
Adult 
Leafmine 
Around thistles and other members of the Asteraceae family as well as mint and other plants.
Peak time is May to September.
UK status not known but thought to be common and widespread.
Status in Leicestershire and Rutland not known but thought to be common and widespread.
Graham Calow
Sapcote
19 July 2012
leafmine on Sow-thistle
David Nicholls
Ulverscroft
15 September 2011
Ron.stevens
Blenheim Crescent
28 October 2014
Melinda Bell
Ashby,Upper Church Street
21 June 2021
Leicestershire & Rutland Map
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MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020
UK Map
Species profile
- Species group:
- Flies
- Kingdom:
- Animalia
- Order:
- Diptera
- Family:
- Agromyzidae
- Records on NatureSpot:
- 37
- First record:
- 15/09/2011 (Nicholls, David)
- Last record:
- 11/06/2024 (Cranston, Elspeth)
Total records by month
% of records within its species group
10km squares with records
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Latest images
Latest records
Melinda Bell
Ashby,Upper Church Street
21 June 2021
Alan Semper
Harby canal
24 August 2014
Alan Semper
Harby canal
24 August 2014
Graham Calow
Western Park, Leicester
14 June 2014
leaf mines on Smooth Sow-thistle
