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uffepuffe

Mayfly nymf

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Was away for the weekend and when taking a walk in the woods on saturday I stumbled across a very small stream flowing from one lake to another. Although my friend protested I just had to go and turn some stones like always and found alot of these mayfly nymfs. Unfortunatly I ran out of batteries in my camera so I just managed to take this on shot of it.

 

Aprox. 10 mm long and based on the size, colours and gills my guess would be Baetis Rhodani, the most common mayfly in sweden. Anyone agreeing or disagreeing?

 

/Ulf

 

post-2830-1149532454_thumb.jpg

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Ulf-

 

Definitely Baetis. Unable to key it to species, as I don't have access to keys for non-N.

American species. However, our Baetis species coming closest to that one (with regard to size and broad distribution) is B. tricaudatus. Thanks for sharing.

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Thanks alot Roger, great and fast answers as always.

 

The only thing that lead me to think it was the Rhodani is that it's the only Baetis around here that reaches over 10 mm and when you confirmed that it's definitly a Baetis I am pretty sure it's the Baetis Rhodani. Or "Stor Åslända" as it's common name is over here, I guess it would be something like "Great stream mayfly" if you translated it to english

 

/Ulf

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