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Photo#109006
Hellgrammite (Megaloptera larva)

Hellgrammite (Megaloptera larva)
Dublin Canyon, near Castro Valley, Alameda County, California, USA
May 9, 2007
Size: 30 - 40 mm
I found this in the middle of the night in an ephemeral drainage in oak-bay woodland with dense canopy cover. It was in about an inch of water in a small pool in the mostly dry stream. I've reviewed a few drawings in books and the closest resemblance I've seen is of a Hydrophilid larva, though an adult of whatever this is would be much larger than any of the other invertebrates I saw in the stream that night.

Can anyone who's up on their immatures weigh in on this one?

That looks right
Yep, comparing it to other photos in the guide, it definitely looks like it's a hellgrammite. That's what I get for convincing myself that it was a beetle larva... I wind up missing things because I don't think outside the elytra.

Thanks guys!

Time to go fishing!
Time to go fishing!

Hellgrammite?
I know we don't have them in my area :(, but it looks like a light-colored hellgrammite, a Dobsonfly larvae. I've only seen pictures of them in black though...

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