Stonefly?

[J55tyger88]

Saw this guy on the LL yesterday. Ive never seen a stonefly but this kinda looked like some pictures ive seen on the net. White patches on wings though?

Was about 2" long...

 

[JackM]

I've never seen white patches on wings, but it looks like a large stonefly. Maybe it got hit with falling bird poop.

 

[ryguyfi]

That would be called a "fish fly"

Here's a former thread on it.

Fish Fly Thread

http://www.troutnut.com/specimen/754

 

[JackM]

Well, I'll be darned, no bird droppings involved at all.

 

[J55tyger88]

Ok so what i got from that link was its an adult helgrammite?

 

[Chaz]

It's a fish fly, not sure about species, but they are pretty common, though not abundant.
Not an adult hellgramite, it is a different species. Hellgramite adult is a dobson fly.But they are in the same family of flies.

 

[BelAirSteve]

I think that is an alderfly - related to the dobson fly, but not as big and nasty. I saw them flying around the Gunpowder and tribs last year. I too thought they were stoneflies. If you catch one, they have very aggressive mandibles! They don't hurt, but can definitely latch onto you.