The larvae mine the leaves of various vetch species forming a blotch, preceded by a gallery along the leaf margin. The blotch is over the midrib of the leaflet. Frass occurs very sparingly in the gallery, and in the blotch as a few large lumps. 

See the National Agromyzidae Recording Scheme webpage on this species for further details of larva, adult insect and host plants

Agromyza bicophaga, Agromyza viciae, Liriomyza congesta

ref.: Warrington, B.P. (2023). Agromyza vicifoliae. Accessed at https://agromyzidae.co.uk/species/agromyzidae/agromyzinae/agromyza/agromyza-vicifoliae/ on 11/12/2023)

Leaf-mine  Adult

Provide backlit photographs of the whole leaf-mine in the leaf, and note the host plant

Wherever the larval foodplants occur.

Click on the 'further details' link in the 'Description' section above.  Then click on the Phenology tab which will provide phenology details for both adult and larval stages.

Leafmines usually occur between May and November.

Nationally Scarce B.

Warrington, B. P. 2022. A provisional review of the status of Agromyzidae in Great Britain & Northern Ireland

Status in Leicestershire and Rutland not known.