Last week I covered Eriocrania semipurpurella; this week’s leafminer is the second of the eight British Eriocraniidae moth species I’ve now found mining the leaves of Birch trees.

This dark grey larva (the colour makes this the easiest of the family to identify) will eventually develop into the moth Eriocrania sangii, which looks to be a very pretty sparkly purple if the image on the UK Moths website is true to life.