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

Subject: Insect shell
Location: San Antonio Texas
August 12, 2017 12:52 pm
Found near our grass clippings under tree. No clue what this is please help.
Signature: Chris

Robber Fly Pupa

Dear Chris,
This Thing has been on our back burner as we have tried unsuccessfully to identify it.  We are pretty certain we have a similar posting buried somewhere in our archives among the nearly 25,000 postings we have made in the last 17 years, but we have not been able to locate it.  We believe this is the immature stage of a Fly in the order Diptera, but we cannot provide any internet citations at this time.  Perhaps one of our readers will help to identify this Thing.

Update:  Thanks to Christopher Taylor who sent a BugGuide link to a Robber Fly Pupa.

What's That Bug? does not endorse extermination

Subject: Green Slimy Bug in Salad
Location: Portland, OR
August 12, 2017 9:59 am
Howdy,
Found this in my salad after eating at a restaurant. It moved like a leach out of water. Able to elongate its body unlike any maggot I have seen before. No ribbed texture like a maggot. Greenish hue slimy, semi transparent able to see some innards. No obvious mouth parts.
This was in Portland, OR on August 7th. Salad was local organic greens. Wandering what it is for health reasons.
Signature: Harlan Whitman

Possibly Flower Fly Larva

Dear Harlan,
What we sacrifice in not getting pesticides in our food is the occasional appearance of an insect in organic produce.  This looks to us like the larva of a Flower Fly in the family Syrphidae, like the one in this BugGuide image.  Syrphid Fly larvae are beneficial predators that eat large quantities of Aphids, and it makes sense that they might be found in organic greens.

What's That Bug? does not endorse extermination

Subject: What’s this bug?
Location: Bathroom
July 10, 2017 3:04 am
Over the last couple of days I found two of these in the bath tub now another one on bathroom rug. I have scowerd the internet trying to identify this as would like to understand where it could be coming from. It has no legs. I’d be surprised if they entering through the high up bathroom window. Then I thought they coming through plug hole… but now I find one on the floor I’m not so sure. Would love to know if you can help. Many thanks. Jelena
Signature: Jels

Rat-Tailed Maggot

Dear Jels,
The identification is easy, but your other theoretical questions are not quite as easy.  This is a Rat-Tailed Maggot, the larva of a Drone Fly, and according to BugGuide:  “larvae of most feed on decaying organic debris. They are filter feeders in different kinds of aquatic media. They purify water by filtering microorganisms and other products.”  Since we don’t know where your bathroom is located:  on the 37th floor of a high rise, in a basement, in Singapore or in New York, speculating on the point of entry is questionable, but we suspect they are breeding in your drain.  If you are connected to a septic tank, this is even more likely.  We suspect these Rat-Tailed Maggots are now seeking a drier environment so they can initiate pupation.

What's That Bug? does not endorse extermination

Subject: blood worms
Location: Mount Washington, Los Angeles, California
May 1, 2017 9:18 pm
Though it might make us unpopular with the neighbors, we keep standing water in the yard for wildlife, and we skim with a net daily to feed Mosquito Larvae to the Angelfish, and Boris is still thriving alone in his tank since killing Medea Luna several years ago.  This week the Mosquito Larvae have been replaced by Blood Worms, the larvae of non-biting Midges, and Boris has been greedily eating everyone put in the tank.

Blood Worms

 

 

What's That Bug? does not endorse extermination

Subject: Is this Botfly larvae
Location: South padre island
April 2, 2017 4:40 pm
Please help identify
Signature: Vivian

Black Soldier Fly Pupa

Dear Vivian,
This is definitely an immature phase of a Fly in the order Diptera, and we do not believe it is a Bot Fly.  We needed to research that South Padre Island is in Texas.  We suspect this might be a Black Soldier Fly pupa.  Was it found near a compost pile? 

What's That Bug? does not endorse extermination

Subject: Found this in a bedroom
Location: Braintree, Essex, England
December 16, 2016 3:23 am
Would really appreciate your help. My daughter found this in her bedroom and having looked at a few websites I have no idea what it is.
Signature: Thanks, Neil

Possibly Bot Fly Larva

Possibly Bot Fly Larva

Dear Neil,
This thing reminds us of a Bot Fly larva, but we have never seen an image of a Bot Fly larva with spiny projections along its body.  We will do additional research and get back to you.  It is possible it gained entrance to your daughter’s bedroom because of a family pet.

Possibly Bot Fly Larva

Possibly Bot Fly Larva

Thank you for tour prompt email.
I hope you have luck finding it, one thing that may help is that we don’t have family pets other than guinea pigs but they live outside.
Thanks again for your help, its much appreciated
Neil

Many Bot Flies are endoparasites on rodents, so the Guinea Pigs may be playing host.

Eric Eaton provides a correction:  Little House Fly Larva
Daniel:
Pretty certain the fly larva is Fannia sp., family Fanniidae.  They used to be in the Muscidae, but are now in their own family.  Known as “Little House Flies.”  Hm-m-m, I may have to do more digging, but the “habitat” would sure fit for that, too.
… I’d like permission to use the Fannia larva images so I can do a blog post.  I found an adult here in Colorado Springs just a couple weeks ago.  I’m attaching an image, in fact.
Happy holidays, safe travels!
Cheers,
Eric

Little House Fly (courtesy of Eric Eaton)

Little House Fly (courtesy of Eric Eaton)

Hi Daniel,
I have attached both images I took as my phone doesn’t keep a record of emails sent for some strange reason.
I am more than happy for him to use the images I did have a look on line at the one he thinks it is and it does look similar other than the one online mentioned 5-8 mm and a black head, I think you can see from the images this was approx 15mm and didnt have a black head. ..
TBH Im more concerned about if its dangerous, how and why it was in my daughter’s bedroom and to stop it happening again.
Thanks again for all your help
Neil

Presumably Little House Fly Larva

Presumably Little House Fly Larva

What's That Bug? does not endorse extermination