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Another #LeafmineMonday, another new leafmine discovery – new to me, that is, not to science or Wales.

This is another mine that’s created by the larva of a moth, the rather handsome micro moth Phyllonorycter platani, whose larvae feed on the leaves of Plane trees. This moth only appeared in Britain 30 years ago – as it can be found in many countries around the globe, it’s not possible to say where it came from or how it got to London but, since 1989, it has colonised much of southern Britain. Of course, no one knows how it’s managed that either, though I did read some speculation on Twitter that, as the first Cardiff records were noted very near the main car and coach parks, the moths could well have hitched a ride on passing vehicles. As I’ve sometimes seen small moths on trains, I can quite believe that possibility.