Thread subject: Diptera.info :: Ephemeroptera

Posted by crex on 30-08-2006 12:00
#1
From midwest Sweden 2006-05-26. Can anyone ID this? First I thought Ephemeroptera, but their second wing pair is either really small or missing. Don't look like Odonata either ... Is it some kind of nymph stage? I'm lost :@
Edited by crex on 01-09-2006 22:46

Posted by Paul Beuk on 30-08-2006 12:44
#2
I will not hazard a guess to the species, but it is an adult with four fully developed wings. The hind wings are significantly smaller than the fore wings, though.

Posted by Dmitry Gavryushin on 30-08-2006 16:30
#3
Hind wings are absent or very small with 3 or less longitudinal veins in Baetidae and Caenidae.

Posted by crex on 14-09-2006 21:51
#4
According to Lars-?ke Janzon (NRM) it's a Ephemera vulgata (Ephemeroptera::Ephemeridae).

Posted by ChrisR on 15-09-2006 10:10
#5
Wow - it's the strangest E.vulgata I ever saw then :D All the ones I see here in England have mottled wings and a much paler colour on the body.

What kind of river was it found near? Slow and muddy or fast with stones?
Edited by ChrisR on 15-09-2006 10:10

Posted by crex on 15-09-2006 11:57
#6
Chris Raper wrote:
Wow - it's the strangest E.vulgata I ever saw then :D All the ones I see here in England have mottled wings and a much paler colour on the body.
What kind of river was it found near? Slow and muddy or fast with stones?


Hi Chris! Well, I've seen a few photos on the web all with rather light colored species. Perhaps the animals get darker when older, but what do I know ...

It was found near a small stream with slowly running water both muddy and sandy with stones, but not much water. That place is about 1,5 km from lake V?nern (Swedens largest lake).

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.