Currently viewing the tag: "Aquatic Bugs"
What's That Bug? does not endorse extermination

Subject: Large bug in pond seems to be eating frog spawn
Location: Aisen, Patagonia, Chile
October 26, 2014 11:31 am
A few years ago we made a pond in our garden in Patagonia, Chile. A few weeks ago a frog laid some spawn and three weeks later we wondered what had happened to the developing tadpoles, then looked closely and spotted several long insects slightly below the water, congregated around the spawn, which now contained only one of the tiny tadpoles. The insects seem to be sprouting wings. Are they a type of dragonfly?
Signature: Paul Coleman

Naiad:  Possibly Dragonfly nymph with frog eggs

Naiad: Possibly Dragonfly nymph with frog eggs

Dear Paul,
The insect in your image is an aquatic nymph of a flying insect, known as a Naiad.  It is very likely that the naiad will develop into a Dragonfly.

Dragonfly Naiad, we believe

Dragonfly Naiad, we believe

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What's That Bug? does not endorse extermination
Aquatic Larva

Aquatic Firefly Larva

Subject: Unknown aquatic macroinvert
Location: Huntington, Indiana
October 11, 2014 9:27 am
Hey bugman!
The college ecology class I teach found this critter while sampling a small, wooded creek on our campus. I’ve shown the picture to a couple of aquatic ecologists I know and none of them have been able to identify it yet. The best we can come up with is that it is some sort of free living caddisfly (Trichoptera). The “shell” looks a lot like an aquatic isopod though! It definitely had only 6 legs. ~1.5-2 cm in length.
Any ideas?
Signature: Collin Hobbs

Hi Collin,
We haven’t a clue as to the identity of your creature, but we wonder if it might be the larva of an aquatic beetle because it really resembles a Firefly Larva or a Netwing Beetle Larva.  We are not certain if there are any aquatic beetle larvae that look like this, but we believe that is a more likely candidate than the larva of a Caddisfly.  We will try contacting Eric Eaton to see if he can provide any information.

Eric Eaton confirms our identification
On my way out the door, but….
Looks like a firefly larva to me, and there are species that prey exclusively on aquatic snails….
Eric

Ed. Note:  Beetles in the Bush and Cambridge Journals Online both have articles on aquatic Firefly Larvae.

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Subject: Found this in my Aquaponics System
Location: Patterson, CA
October 4, 2014 1:47 pm
I cannot positively identify this bug. I have found things similar to it online, but nothing quite like this…
I have an aquaponics system and the are thriving in my duckweed grow bed. When I drained the bed today these things came out like spiders from the rocks at the bottom of the growbed. When I put in the duckweed there were small things swimming in the water, I actually assumed they were frershwater shrimp, but now I m guessing they have grown and this is what I have. What is this? should I get rid of it? Should I keep it? Can I eat it?
Signature: Nick

Dragonfly Naiad

Dragonfly Naiad

Dear Nick,
This is the naiad or aquatic nymph of a Dragonfly, and it is considered a beneficial insect that will eat mosquitoes and other small creatures in your aquaponics system.  We imagine you can eat it if you wanted to try, though we don’t believe we have seen any references regarding Dragonfly naiads being relished by entomophages.

Aquaponics System

Aquaponics System

 

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Subject: Bugs In My Pool
Location: Westminster, California, U.S.
September 17, 2014 6:24 pm
I have found about 50 of these crazy little bugs in my pool over the last two days and have no desire to swim with them. My best guess is that I can be rid of them by keeping the pool algae free, which has been a problem this summer. In the meantime, what is this bug that lives underwater, moves very slowly on land does not survive outside of the water, swims very quickly in trying to escape my net, and has my wife so freaked out she will not swim in the pool until they are gone?
Thank you,
Signature: Gary

Dragonfly Naiad

Dragonfly Naiad

Dear Gary,
This is the aquatic larva of a Dragonfly, commonly called a Naiad, a name shared with other aquatic larvae of flying insects.  We are very curious about your pool, which has algae as well as thriving aquatic insect life.  Do you not use chlorine or other pool chemicals?  Since Dragonfly Naiads are predatory, they need to eat other aquatic creatures, including the larvae of Mosquitoes, hence they are beneficial insects.  Dragonfly Naiads are not aggressive toward humans, and they will not hurt you or your wife.

What's That Bug? does not endorse extermination

Subject: unidentifiable front pincer bug
Location: Northern MN (Grand Rapids)
July 8, 2014 7:06 pm
I have no idea what this is. I live in northern mn, I’m originally from Texas, in saying this all the locals have never seen it either. My friend found it crawling across the parking lot of our church.
Signature: doesn’t matter

Water Tiger

Water Tiger

Dear doesn’t matter,
This is an aquatic Water Tiger, the predatory larva of an aquatic beetle, and we cannot fathom why it was in your church parking lot.  Perhaps one of Minnesota’s 1000 lakes is adjacent to the parking lot.  Perhaps someone captured it in a nearby lake and left it in the parking lot.

What's That Bug? does not endorse extermination

Subject: Large African Flying Beetle
Location: Burkina Faso (West Africa)
June 28, 2014 11:38 am
Hey Sir, I am a Marine stationed out here in Africa and saw the weirdest looking beetle outside my house. I have never seen anything like it on discovery channel. The things was huge and aggressive. Not only did it have huge claws to grab stuff with but it fly’s also! It wasn’t even scared of me it actually tried to attack me. I didn’t squish the monster he took off and caught a moth in flight. Hopefully you can help me identify this guy.
Signature: Zachary Staman

Giant Water Bugs

Giant Water Bugs

Hi Zachary,
It is easy to mistake this Giant Water Bug in the family Belostomatidae for a beetle, but closer inspection will reveal that instead of mandibles adapted to chewing like the beetles, the Giant Water Bug has a mouth designed to pierce and suck fluids from its prey, consistent with the mouths of Heteropterans, the True Bugs.  Giant Water Bugs from North America are often called Toe-Biters because unwary waders have frequently received a painful bite if they step on one of these aquatic predators, or otherwise carelessly handle them.  

What's That Bug? does not endorse extermination