The larva of the fly Cerodontha iridis forms a blotch mine on the leaves of various Iris species including Iris foetidissima. The affected area may be large as several mines may coalesce. The mine has a mottled appearance.
Where the larval host plants occur.
Mines usually occur in the early autumn.
Status in Britain is difficult to determine due to lack of records.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015