Agromyza alnivora on common Alder, Leybourne Lakes

Agromyza alnivora on common Alder, Leybourne Lakes

Observation - Agromyza alnivora on common Alder, Leybourne Lakes - UK and Ireland. Description: Double line of old frass intermittently visible indicating an Agromyzid, brownish mines and general

Double line of old frass intermittently visible indicating an Agromyzid, brownish mines and general appearance on Alder suggests this, the only UK species listed, Upper surface mine, several intercrossing, but none crossing a main vein. One apparently dead larva still in its mine..