It seems a strange season for them this year on our stream we had a busy few weeks but then they never seemed to stop. Every evening I see a few desperate males dancing along the margins and then during the evening in stream i see what seems to be a dozen or so ladies dropping eggs.
It’s anecdotal but these later ones do look marginally smaller . I wonder if these are one year rather than two in the earlier hatch’s . Has anyone else noticed changes?
Ours by the way are E. vulgata