What's That Bug? does not endorse extermination

I found this bug, would love to know what it is
Tue, Jun 2, 2009 at 12:53 PM
Me and the kids stopped off by a mountain stream at the bottom of helvellyn in the lake district on sunday and there were lots of these creatures on the rocks around the water, i would appriciate your help in finding out what type of “thing” it is – it resembled something like a flat grass hopper/ over grown earwig crossed with a scorpion, it didnt have a sting but had quite large mouth/biting bit – ithey were a good 2″ long and not particualrly friendly looking
jodie lee
lake district

Stonefly Naiad

Stonefly Naiad

Hi Jodie,
This is the aquatic nymph of the Giant Stonefly known as a naiad.  Presumably it has crawled from the stream, will soon molt its exoskeleton, and become a winged adult.  Adult Giant Stoneflies do not feed, but are relished by trout, other fish, birds and many riparian predators.  Anglers use both larval and adult Giant Stoneflies as bait.  We have recently posted a photo of an adult Giant Stonefly for comparison.  You photo and letter will not go live on our site until Tuesday at noon.  We have been preparing posts to update one a day while we are out of the office planting tomatoes.

What's That Bug? does not endorse extermination

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