Help - Insect identity?

[tomcatin]

Out and about yesterday, casting to a few wee trout rising to what looked like a mixture of olives and wee bright green flies (can't you just tell that entomology isn't one of my specialities ! :roll:) .......... any way this invertebrate zoo creature floated past my feet:

[attachimg=1]

Unfortunately there is nothing in the photograph to provide some scale, but I would estimate that it was approximately 80mm long and perhaps 25mm wide. It looked like it would have fed one of the rising trout for a day, but it floated downstream unmolested

Any clues as to its identity?

[Fishtales]

Stonefly?

[tomcatin]

Fishtales

Cheers, I think you are correct (once again!!!) .......... I had absolutely no idea that stonefly were that big ...... I had notice a few over the last week but had never been so close to get an idea of the size of them!

[Fishtales]

I've had a look through my book and it is a Yellow Sally, the one on my finger is the larger one and is 30mm long, which is about twice the size

Are you sure it was 80mm. That is three inches in old money  :shock:

[Highlander]

80mm long and perhaps 25mm wide

Jesus the Troot must be big in that water if that is the size of flies.
:roll:
Tight Lines

[Clan Ford]

Doesn't look like a yellow sally to me - more a bog standard stone fly.  Yellow sallys all tend to be yellow :roll:  Plenty of them on the Earn at the moment the troots seem to quite like them : 

Norm

[Hoolet]

any ive seen have been a very bright vivid colour,that one looks like a normal stonefly to me too.

Hoolet.