Posted by ChrisR on 16-09-2006 01:56
#7
Hmm, OK. I am no expert on Ephemerotera but I do come across
Ephemera lineata,
vulgata and
danica quite frequently here. A friend of mine once said that
danica were always found in fast-flowing rivers, while
lineata and
vulgata tended to be in slower, muddy rivers - and I have found that to be the case in England certainly.