A concentric effect on Holm Oak.

A concentric effect on Holm Oak.

Observation - A concentric effect on Holm Oak. - UK and Ireland. Description: A concentric leaf mine on a Holm Oak leaf (Quercus ilex). (But actually, not a leaf mine. I edited the title to reflect reality after receiving a helpful comment!)

A concentric leaf mine on a Holm Oak leaf (Quercus ilex). (But actually, not a leaf mine. I edited the title to reflect reality after receiving a helpful comment!)