I'm going with Rithrogena Semicolourata - the hind wings are far too large to be a LDO. There were a few empty shucks from these on my local river last night and it's about now that they start showing....so its a good old Upright for me.
M

__________________
The sun pushed dark spokes of melt and sparkle
Across the fields of hoar. And the river steamed -
Flint-olive.


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