Pegomya solennis


Pegomya solennis is a small blackish fly whose larvae mine the leaves of various members of the Dock family causing large blotch mines.

Identification difficulty
Recording advice

The adults must be bred to identify the species as several Pegomya species mine Dock.(reference British Leafminers website).


Around dock plants.

When to see it

The mines can be seen when dock is in leaf.

Life History

The emerging larvae initially work shoulder to shoulder in making a broad corridor. Later they split up, making a large blotch that often is enlarged even more by fusion with other mines. The mine is practically full depth. Frass blackish-green, often deliquescent. The larvae can leave a mine and restart elsewhere. Pupation outside the mine.

UK Status

Fairly frequent and widespread in England and Wales.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map