Creepy Crawlies?

Can someone tell me what the insects on the post are?

Edited to add: I should I suppose say that this is Southen UK just over a week ago.

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They look like they may be the duns,,,,, shells of something like damsel flies that pupate from their aquatic phase into the adult flying phase.

Keith,

Thank you.

Keith Newton wrote in post #8436393
They look like they may be the duns,,,,, shells of something like damsel flies that pupate from their aquatic phase into the adult flying phase.

That is what I would have guessed. Damsel flies or mayflies.

I fully expected the Wagtail to grab a quick meal, but the empty shells obviously did not appeal. Seemed far more intrigued by the sound of the camera shutter than anything else, but not bothered because it then flew down onto a gravel beach about 6 ft away from me.