Food Plant: Iris pseudocorus (Yellow Flag)

Mine: July - October

Pupa: in the mine

Notes: Short, longitudinal blotches - often coalescing to make longer mines or wider mines or both (count the larvae). The frass is collected in one place leading to a black spot in the mine. Widespread and common throughout the U.K. in association with its host, Formerly Dizygomyza iraeos

Data: 29.ix.2025, Downham Market, Norfolk, VC28

Image:© Rob Edmunds