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

Subject: Trying to identify bug in pool
Location: Martinique
November 22, 2014 10:00 am
Can you help identify what this is please ?
I found it swimming in our pool after a few days of heavy rains.
Signature: Matthew

Backswimmers

Backswimmers

Dear Matthew,
These aquatic true bugs are Backswimmers in the family Notonectidae.  According to BugGuide they are:  “Aquatic bugs that often swim upside-down. When resting at the surface, body is typically tilted with the head downward”
and they “Prey on other aquatic insects and sometimes on small vertebrates.”  Backswimmers can fly, which enables them to seek a new home if their pond dries out.  We don’t know what would have caused them to relocate to your pool after the rains.

Sue Dougherty liked this post
What's That Bug? does not endorse extermination

Subject: Bug in Dam
Location: Taggerty, North East Victoria, Australia
November 18, 2014 2:26 am
Hi there,
I was taking photos of dragonfly over my parents dam when I noticed this guy staring at me.
This photo was taken in Taggerty, (north east) Victoria, Australia. We’re at the end of spring but it’s been quite a hot spring. Never seen anything like it before and it was about an one maybe one and a half inches long.
Thanks for your time
Signature: Cait O’Pray

Dragonfly Naiad

Dragonfly Naiad

Subject: Bug In Dam Update
Location: Taggery, Victoria, Australia
November 19, 2014 2:03 am
I sent a ID request yesterday about a bug i saw laying on a lillypad that i’d never seen before. Well today i went back to take a look and i think it’s shed it’s skin?? Thought it might help to ID it if you get the time.
Signature: Cait O’Pray

Dragonfly Exuvia

Dragonfly Exuvia

After having had a look on line i think this might actually be a dragonfly nymph! i did notice what i think is a red dragonfly, yesterday i only noticed one red one and today there was definitely two bright red ones.

Dear Cait,
You are correct that is a Dragonfly Naiad, and your second image is of the exuvia or cast off exoskeleton.  Dragonfly Naiads are aquatic predator, and when the time for metamorphosis nears, the naiad leaves the water and climbs a vertical surface, like the grasses depicted in your second image, and there it molts for a final time, flying off as an adult Dragonfly.

Nickie Cooper Wolfe, Cait O'Pray liked this post
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

Andrea Leonard Drummond, Brandy Lynn Grigg liked this post
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.

MaryBeth Kelly, Veronica Enos Amaral liked this post
What's That Bug? does not endorse extermination

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

 

Emily Camille liked this post
What's That Bug? does not endorse extermination

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