Leaf mines in birch

Leaf mines in birch

Observation - Leaf mines in birch. Description: This observation relates to the comments at http://www.ispot.org.uk/node/17783 and shows groups of translucent leaf mines in birch leaves. Some show evidence of larvae in the mines and others show cut-outs either forming or formed. Picture taken in secon

This observation relates to the comments at http://www.ispot.org.uk/node/17783 and shows groups of translucent leaf mines in birch leaves. Some show evidence of larvae in the mines and others show cut-outs either forming or formed. Picture taken in second half of May.