Thread subject: Diptera.info :: Mayfly
#1
Norway, 01.05.11.
I have no idea where to start with this one. Fist time I really looked at a mayfly.
About 10mm excluding tails (of which there were two).
Hopefully someone can help me to get genus or maybe even species.
Live specimen here:
http://www.flickr...otostream/
#3
Ephemeroptera, and it must be genus Epeorus, for it is the only one I know of, whom has two tails
#4
The wing looks very like
Leptophlebia marginata, so I think you lost a tail filament - there should be three!
#5
atylotus wrote:
Ephemeroptera, and it must be genus Epeorus, for it is the only one I know of, whom has two tails
Baetidae, Heptageniidae (including Epeorus) and Siphlonuridae all have only two tails - but this wing is not from any of them.
#6
Tony,
of course you are absolutely right. I looked in Bauernfeind & Humpesch (2001) and indeed many more genera (in the adult stage) have two tails. and the wings look indeed like a Leptophlebiidae. I made a mistake with the nymphal characteristics: the nymph of Epeorus is the only genus with 2 filaments.
#7
Thankfully not all children look like their parents!

#8
Thank you both!

#9
Leptophlebia marginata is correct, a female imago