A long narrow corridor mine on Reed Sweet-grass found in the canal at Copley. Quite a scarce species in Yorkshire with just a handful of records.
The larvae habitually changes leaves - twice in this case.
The almost black pupa, originally encased in a whitish cocoon.
The adult emerged 10 days after finding the pupa. For once those frantically twitching antennae aren't because it's unsettled and wants to escape, it because.............
I think, and I could be wrong, that this is a female and not soon after taking a few photos she started calling for a mate by raising her wings to emit pheromones.Any info on this behaviour would be good.