Cerodontha iraeos

Alternative names
Iris Leaf-miner

The larvae of the fly Cerodontha iraeos mine the leaves of Yellow Iris (Iris pseudacorus). The mine takes the form of an irregular corridor, essentially parallel to the leaf blade. The mine is white when seen from above. Frass in one, rarely more, big black lump. Larva solitary. 

Identification difficulty

Adult Leafmine photo showing mine held up to the light is required.

Recording advice

Unless identified by a recognised expert, a photo showing mine held up to the light is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


Wherever Yellow Iris is present.

When to see it

Mines might be encountered whenever Yellow Iris is in leaf.

Life History

Pupation occurs within the mine.

UK Status

Widespread and fairly frequent in Britain – though not well recorded.

VC55 Status

Status in Leicestershire and Rutland not known.

Leicestershire & Rutland Map


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

UK Map