This one has me stumped??

[Ryewolf]

Any ideas... I've not seen anything like this before and unfortunately I only had my Sigma 150-600mm lens with me, which isn't great for macro/close-ups. I did think it was a moth at first, but I'm now thinking dragonfly larvae...

 

[steelydan]

I think its a Mayfly.

 

[Mark_T]

Yep, definitely a mayfly.

 

[Ryewolf]

Thanks John and Mark....

 

[Jelster]

Mayflies do have that "3 tails" thing going on....

 

[alfbranch]

It is a mayfly possibly a green drake or Ephemera danica

https://species.nbnatlas.org/species/NHMSYS0000066970

 

[john.margetts]

Looks like an olive upwing to me. Certainly not any larva as it has wings.

 

[Ryewolf]

Thanks Alf and John.