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applestar
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Is this a dytiscus larva? >> dobsonfly/hellgrammites

I saw three of these swimming around in my pond. I was excited thinking they are dragonfly larvae, but the searched images don’t match up.
Image
I’m thinking they might be DYTISCUS diving beetle larvae? They were about 1.5 inches long. What do you think? Anyone know?

Either way, the pond is definitely free of any sign of mosquito larvae. :D

...incidentally, I noticed the little guy after uploading the photo? What’s that one?
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applestar
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Posts: 27816
Joined: Thu May 01, 2008 11:21 pm
Location: Zone 6, NJ (3/M)4/E ~ 10/M

Re: Is this a dytiscus larva?

OK — I think I have my answer ... one from my BIL who likes to fish :wink:

He replied “hellgrammites”

...Really? Wow. So looked it up and this says hellgrammites are larvae of dobsonflies — 4-5 INCHES LONG??! OMG

— I liked this part —

eastern dobsonfly - Corydalus cornutus (Linnaeus)
https://entnemdept.ufl.edu/creatures/mis ... sonfly.htm
Hellgrammites tend to be found in relatively unpolluted water. Therefore, they may have value in bio-monitoring studies (Voshell 2002). Perhaps their greatest value may be their contribution to biodiversity in their habitat as predators.
Learning never ends because we can share what we've learned. And in sharing our collective experiences, we gain deeper understanding of what we learned.

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