The larva form a blotch mine on the leaves on Stinking Iris (Iris foetidissima). The affected area may be large as several mines may coalesce. The mine has a mottled greenish appearance.

See the National Agromyzidae Recording Scheme webpage for this species for further details of puparium and adult insect

Cerodontha iraeos

(ref.: Warrington, B.P. (2023).  Cerodontha (Dizygomyza) iridis. Accessed at https://agromyzidae.co.uk/species/agromyzidae/phytomyzinae/cerodontha/dizygomyza/dizygomyza-iridis/ on 12/12/2023).

Leaf-mine Adult

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

Where the larval host plants 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 may be found in most months of the year.

Local

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

Fairly frequent in Leicestershire and Rutland.