Currently viewing the category: "Maggots"
What's That Bug? does not endorse extermination

Subject: Parasitic Larva
Location: Chihuahuan Desert, Far West Texas near the Rio Grande
April 19, 2013 4:01 pm
Hi there! This morning I set out to doctor what I thought was an infected thorn stuck in my dog’s side. Imagine my shock when instead of a thorn, I pulled out a wiggling larva! It didn’t look like a normal fly maggot to me, and a quick search of the internet pointed me to the Bot Fly. I’d really appreciate your expertise to clear up this baby bug’s identity.
Signature: Sara

Bot Fly Larva

Bot Fly Larva

Hi Sara,
We are really happy you identified your dog’s Bot Fly Larva, and even though they are allegedly not a threat to the health of the host, your dog is probably relieved to have had it removed.

What's That Bug? does not endorse extermination

Subject: Aquatic grubs
Location: Northeast Los Angeles
March 20, 2013 2:06 pm
Hello, Bugman! It turns out that I’ve been following your site for quite a while, and recently discovered that we’re neighbors, as I also live in the Mt. Washington area. So these are pretty local critters!
I have found these aquatic grubs in our (non-working) backyard water feature a few times while trying to keep the mosquito larvae population under control. I came across these two specimens yesterday and had the presence of mind to take a picture to send to you, along with a dime for scale. I have tried before to find something on the web, and today I tried the term ”aquatic grub”, and ended up here: http://www.aquatax.ca/miscdip.html – a website devoted to Saskatchewan Aquatic insects, which has a picture of a grub that looks very similar.
I realize we may not be able to nail down the species, but this looks like it could be a Dipterid grub. I love syrphid flies, and would be happy to know if that’s what they are. In any case, just wondering if you can identify or possibly confirm my conjecture. Thanks very much!
Signature: Jonathan V

Rat-Tailed Maggots

Rat-Tailed Maggots

Hi Neighbor Jonathan,
Rat-Tailed Maggots are the aquatic larvae of a large Syrphid Fly known as a Drone Fly,
Eristalis tenax.  You might be interested in our Mount Washington Tag.  We archive most of our own photos there.

Fantastic, Daniel, thanks! I don’t think I realized that maggots could have their own name, but that’s certainly an apt one.  (And, you’ll be happy to know that I returned them to the pond.)
Thanks for the tip about the Mt. Washington tag, too. If I come across more unknown insects, I’ll be sure to check there, first.
Take care!
Jonathan

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Subject: Snork a pillar?
Location: Grovetown, Georgia
February 15, 2013 1:35 am
I have never seen such a bug with a snorkel. This bug was in a tub of clothing that was outside and filled up with water. The long tail or whatever it is is what made me inquire. I hope you can identify this bug?
Signature: Larry the Birdman

Rattailed Maggot

Hi Larry,
You encountered a Rattailed Maggot, the larva of a Drone Fly,
Eristalis tenax.

What's That Bug? does not endorse extermination

Subject: Larvae with ”tooth?”
Location: South of Dallas, TX
October 24, 2012 5:08 pm
Hello Bugman -
My son found a very strange larvae/caterpillar that I have been unable to identify. The creature was found on October 20, in leaf litter at a campsite south of Dallas, Texas.
It has a large ”tooth” that it retracts when threatened, and otherwise uses to aid in moving along the ground.
I have scoured BugGuide, Google Images and of course WTB, and cannot find anything similar.
As always, thank you for your time and resources!!
Signature: -Brandon

Horse Fly Larva, perhaps

Hi Brandon,
This is some type of Fly Larva.  We believe this is a Horse Fly Larva.  Here is an image from our archive for comparison and there is this image from BugGuide that also looks similar.  Most Horse Flies have aquatic larvae, but some Horse Fly larvae develop in damp earth.  We also have these photos of Soldier Fly larvae that we originally misidentified as Horse Fly larvae that look quite similar.

Possibly Horse Fly Larva

Daniel -
Thank you!  I would not have suspected the larva of a fly, as this creature is relatively large (nearly 1.5″ long).  After reading more, I too lean toward Horse Fly as the most likely suspect.
Thank you again for helping me with this.  My son and I are both fascinated with the small, typically unseen, life that we share our planet with.  Your site, coupled with our continuous field searching, has provided a steady stream of education and entertainment.
Best regards,
-Brandon

Hi again Brandon,
Your response has caused us to ponder something that we have long known but have never quite put into words.  As educators in the public schools, we are well aware of the responsibilities that teachers have, but when assessing student learning, there are many outside factors that do not ever seem to be addressed.  Parents also have a major responsibility in their children’s education.  Instilling a love and appreciation of nature at an early age like you are doing is critical if we want future generations to find value in the world around us.  That early appreciation will also make the learning that students do at all levels, elementary school, high school and college, more relevant if it is a reinforcement of values they learned at a young age at home.  It is the responsibility of the parents to help prepare their students for the future, but sadly, teachers and educators cannot control what happens in the home.  Quality time cannot be underestimated and learning is best when there is dialog involved.  Alas, as our classrooms get more and more crowded and there is less time for instructors to interact individually with students, we can only expect that learning outcomes in public schools will plummet. 

Daniel -
I agree with your pondering, and find that it’s a sad result of our busy corporate society.  Parents can easily become too focused on, and too busy with, careers and always seeking to attain more.  They rely on school/teachers to do all of the work of educating.  Our children pay the price for this more so than what is immediately apparent.
Beyond that, I encounter fewer and fewer adults or kids who are deeply interested in science and nature.  We live in a large metropolitan area, and nature is not as readily available here as it was where I grew up in a more rural area.  However, it IS most certainly available if you go looking for it.  The problem I see is that people just don’t think about nature; they are too busy with “more important” things.  My son is always eager to share with his friends about what we’ve found and the pets we keep (reptiles and inverts).  His friends become excited and interested when they are exposed to things they don’t commonly see.  We frequently receive comments like “You found THAT in your BACK YARD?”  While my son and I seem to share this excitement almost inherently, it is something that others must first be exposed to before they can even think about developing an interest in it.  This exposure falls outside the realm of the public school system, because it requires venturing out of the classroom or beyond the standard curriculum.  If parents (or other leaders) do not offer this exposure, many children will likely never receive it.
I am quite passionate about my hobbies, and my cube at work is full of my photos of both pets and things we’ve found in the wild.  Not only does it make for interesting conversation with coworkers, it also raises awareness. We do what we do for our own hobbies and interests, not necessarily for a larger purpose.  But, I can only hope that we positively influence others along the way, and cause them to stop and look down the next time they are walking around outside.
Thank you for doing what you do.  I read comment after comment on your site reflecting the appreciation of your audience.  You are clearly filling a void and serving a great purpose.
Regards,
-Brandon

Hi again Brandon,
Thanks for being a fan, but even more, thanks for being a great dad.

What's That Bug? does not endorse extermination

Subject: uhhhhhh?
Location: Errington, British Columbia, Canada
September 14, 2012 6:59 pm
So this spring I went and heaved a garbage can full of seaweed up to my house to make for a happy gardener. I decided to let the seaweed rot in the container over the summer, adding water as it evaporated.
The other day my partner asked for his can back so off I went to deal with the muck. I lifted the lid and this is what I found. I love knowing what all the ”bugs” are around my yard,and really do with I just had an entomologist friend at hand to ask all questions to. Alas, I do not :( Hopefully you can help.
Picture was taken today, September 14th 2012, in Errington, BC, Canada.
Thanks!
Signature: Curiously watching the sludge seethe!

Rattailed Maggots

Dear Curiously watching the sludge seethe,
You have Rattailed Maggots, the larval form of a large introduced Syrphid Fly known as the Drone Fly,
Eristalis tenax.  These Rattailed Maggots will help the seaweed break down as they feed on decaying organic matter and they are frequently found around barnyards and in areas with rotting manure.  You can also find helpful information on this NCSU online document.

Rattailed Maggots

What's That Bug? does not endorse extermination

Subject: need help with ID of worm masses
Location: North Carolina
July 7, 2012 3:43 pm
Hi,
Can you help ID this mass of Asheville, North Carolina worms sent to me to ID (no luck)? Several masses of worms were found on concrete on their property.
Signature: John

Fungus Gnat Larvae

Dear John,
This is an aggregation of Fungus Gnat Larvae.
  Here is some information from the University of Delaware Cooperative Education website:  “As a result of our unusually wet weather, I’ve been receiving some interesting inquiries and digital images from arborists, landscapers, and homeowners. Their questions or observations are usually described to me as if they’re seeing ‘worms’, ‘tapeworms’, ‘processionary caterpillars’, or ‘armyworms’ crawling across the landscape, sidewalk or driveway. The masses are slimy or wet looking and several inches to several feet long as they move over landscape timbers and other surfaces. Even though this behavior is not yet understood entomologically, past experiences have allowed me to accurately identify these masses of larvae as an aggregation of darkwinged fungus gnat larvae. Observations of these masses of larvae are usually associated with a rich organic soil environment such as a recently mulched area where turfgrass is being established or shady, damp regions of the landscape. The larval stage of a darkwinged fungus gnat is thin, white, and legless with a shiny black head capsule. They have a smooth, somewhat transparent exoskeleton that reveals digestive tract in the center of the abdomen. Mature larvae are about 3 mm (1/8 inch) long. When
hundreds of these larvae congregate together to form a ribbon-like mass it is indeed an unusual sight in a landscape. Darkwinged fungus gnat larvae feed on the roots of many different plants and organic matter in the United States. They are recognized as important pests in greenhouses and mushroom cellars. They are also pests of houseplants. Adults and larvae inhabit moist, shady areas. Adults are very small, sooty gray or nearly black, long-legged, slender flies that live about 1 week. Females deposit 100-300 eggs on soil, usually near the base of plants. Larvae reach maturity in about two weeks and then construct a pupal case in soil. There is no reason to treat these masses of darkwinged fungus gnat larvae. Use this unusual insect behavior as an opportunity to educate your clients regarding the diversity and importance of insects in their landscapes.”

Daniel, thanks so much!  This is my second request over the years and I continue to be impressed with your skills and your website.
I just made a $10 donation to support your website; … .
All the best!  -John
PS: I’m looking forward to sharing the fungus gnat info with my NC friend when I see her soon.

What's That Bug? does not endorse extermination

What is this mystery bug?
Location: New Mexico, not Colorado Springs
December 3, 2011 11:38 am
Hello there,
Please can you help me identify this?
Thanks,
Gillian
Thanks – by the way the bug was found in New Mexico, not Colorado as stated :)

Fly Larvae, we believe

Hi Gillian,
Can you provide any additional information?  What habitat were they discovered in?  We believe these are some type of Fly Larva, but we would like to eventually provide a more specific identification.

What's That Bug? does not endorse extermination

What is this larva/worm-like creature in my bathroom?
Location: Southeast Michigan, indoors, second floor bathroom.
November 28, 2011 3:12 am
Hello there!
The other day I found this small crawly thing, moving somewhat like a caterpillar across my bathroom floor. I scooped him up and took it outside. Tonight, I was in the bathroom and saw one on the floor again, then noticed another on the counter, and then I saw a pair of shorts on the floor, and upon shaking them out, two more fell to the floor.
This is the first time I’ve seen anything like these critters; adult bugs usually seem cool to me, but the squishy, wormy types really gross me out.
This was in my second floor bathroom, and I have not noticed these bugs anywhere else in my house (yet?). In the pictures, you will see one end taper to a sort of proboscis, which is the ”head” of the critter, and it uses this to sort of pull itself along, it seems.
Anyhow, I look forward to your help. I’d love to know if these are a potential pest, where they might come from, and how to stop them.
Signature: Adam K.

Seeds? or Larvae???

Hi Adam,
Autumn is the time of year that many living creatures fulfill their reason for living and reproduce, and this includes plants.  Many plants have evolved unique methods of dispersing their seeds, and this includes the development of spines and stickers that attach to the fur and feathers of mobile creatures, and this includes human beings.  Clothing, like the shorts you seem to have left on the bathroom floor for several days, can become infiltrated with seeds that are transported to new locations.  We believe these are seeds, though before we enlarged the images, we mistook them for the larvae of Carpet Beetles.  If they did in fact move of their own volition, then perhaps, like Mexican Jumping Beans, the seeds contain insect larvae that are feeding on the embryo inside, eventually emerging as adult insects.  In our opinion, your things do not look like insects, but they do resemble seeds.  Perhaps eventually a reader with a more botanical background can confirm or deny our suspicions.

Not larva, but Seed, we believe

Thanks for the response… wow, that’s weird, and really creepy. You see, these things did move, and the pointed end would move around back and forth, as if it was a feeler/antenna/proboscis. The “body” was soft and segmented and moved like a slug/caterpillar, in an inching fashion… and they moved relatively fast for their size and form of locomotion.
The reason it’s weird is that those pair of shorts haven’t been worn outside for at least two months, and they were clean before I took them off. So it is hard to grasp where they came from!
Hopefully plants aren’t evolving in creepy ways! Just kidding… but anyhow, thanks again for the response. It still seems a bit of a mystery to me, but since I removed them, I haven’t seen them again

Hi again Adam,
Maybe we are wrong and maybe they really are some unknown larva or other creature.  Now that this is a featured posting, perhaps someone will be able to provide a conclusive answer.

Eric Eaton responds
Yeah, these actually are larvae.  Some kind of fly as I recall.  Hang on…..Ok, looks like larvae of Fannia:
http://bugguide.net/node/view/562282
Not sure if I want more information on exactly where they were found….:-)
Eric

Thanks much Eric.  We are also linking the the family page for these creatures, which we suspected had to be Fly Larvae if they were insects, and we learned on BugGuidethat the “Larvae live as scavengers in various kinds of decaying organic matter.”

Muscoid Larva

WOW! Holy crap! That has to be it, Daniel! Those look *exactly* like the things I saw, and you will notice that in the page there, the person said they found them “eating” cigarette butts! That must be it! There was an coffee mug that my roommate had been using as an “ashtray”, and it was nearly overflowing with butts. I dumped it out after finding the bugs, wondering if that was the problem. That’s it! Thank you!

At the risk of sounding crude Adam, we are very happy they had nothing to do with the shorts on the floor.  We are put out by human parasites.  We also feel it is fair to call them Maggots.

lol No, no, that gave me a good chuckle. I am quite happy they had nothing to do with the shorts, since the shorts are mine! I guess those little maggots crawled out of the mug, and must have fallen down onto the shorts. Human parasites are no friend of mine either ;) I still wonder how exactly the maggots got in the glass in the first place, but I suppose a Fannia adult could have laid eggs in there before they died out. That would also explain the small flies I saw in the bathroom about a month ago.
Thanks again!

 

What's That Bug? does not endorse extermination