Here’s a photo from Morgans Hill that I took back in July of a female Essex Skipper Thymelicus lineola. Followers in North America may recognise this butterfly as the European Skipper. It closely resembles our Small Skipper Thymelicus sylvestris which it is often found in company with, but that species lacks the black tips to its antenna.
Because of the similarities, it is often under-recorded and for this reason was not recognised as a separate species until 1889. As such it was the last British resident species to be described.