Food Plant: Ulmus spp.

Mine: June-August

Notes: A gallery is formed from a vein (where the egg is laid). A blotch develops, with a dark centre (as shown), where the cocoon is formed. Mine shown is on Ulmus glabra.

Data: 20.vii.2014, Meerhout, (Antwerpen), Belgium

Image:© Carina Van Steenwinkel