New species for Berkshire (and for Upper Thames?)

Paul Black got in touch yesterday with exciting news of a new arrival in Berkshire: Portland Ribbon Wave (Idaea degeneraria). This is from near Leckhampstead on the Berkshire downs, and Paul found it on 22 August.

This species is resident in Dorset and increasingly frequent as a migrant on the south coast, but inland records are still unusual I think.

Portland Ribbon Wave (Paul Black)