Currently viewing the category: "Maggots and Puparia"

Subject:  Found in a creek water fall???
Geographic location of the bug:  Folsom, California (summer)r
Date: 06/18/2021
Time: 04:43 PM EDT
Your letter to the bugman:  OMG! Founds this in a creek while camping in Folsom and it looks like some horror movie leech! Please know what thos is s I I can breath easy and be able to go back in the water here.
How you want your letter signed:  Sicerly, Michael Del Carlo

Leather Jacket

Dear Michael,
This sure looks to us like the larva of a Crane Fly in the family Tipulidae, and you can compare your individual to images posted to Trout Nut, an anglers’ website.  Here is a BugGuide image.  We first read the common name Leather Jacket for Crane Fly larvae in Insects of the Los Angeles Basin by Charles Hogue.  Though it somewhat resembles the “graboids” from Tremors (see Monster Legacy) we assure you the Crane Fly larva is perfectly harmless.

Subject:  What can be this “larva”?
Geographic location of the bug:  Madrid city, NE
Date: 03/28/2021
Time: 01:59 PM EDT
Your letter to the bugman:  There are lots of this larva (I think that it is a larva, but not sure, perhaps a chrysalis) at my parents flat roof. Many of them near to an open box with compost. Some of them looks alive, some of them are “emtpy”. It is the first time that something like that appears there.
Thank you.
How you want your letter signed:  Chris

Black Soldier Fly Larvae

Dear Chris,
These are Black Soldier Fly larvae and they are often found in compost piles.  They are harmless and are actually considered beneficial as they help to break down the organic materials in the compost pile.

Subject:  Weird worm like creature found in water
Geographic location of the bug:  Petersburg, Tennessee
Date: 04/29/2019
Time: 09:20 PM EDT
Your letter to the bugman:  I was going outside catching tadpoles to grow and I can across this worm like thing. I scooped him up and put him in with the tadpoles. Maybe he wasn’t originally in the water and he fell in? But I didn’t want to take the chance. I’ve looked up tons of worm like creatures and even asked my parents to no avail. It would be appreciated greatly if you could help figure this mystery out. Thanks in advance.
How you want your letter signed:  Sierra

Horse Fly Larva

Dear Sierra,
We believe this is a Horse Fly larva.  According to Quora:  “
Most horse flies are associated with water, and the carnivorous larvae can be found therein. I have collected black horse fly larvae while searching through the muck and mud at pond edges. [T]Here’s a Colorado State University photo by Jennifer Bonnell of what is probably a black horse fly larva eating a small frog; they’ll also eat other insects, and, while I’ve never seen it, I’m sure they’ll eat any weakened or trapped minnows they might be able to.  Through the summer, the larvae grow in the water through 6–9 instars, and ultimately spend the winter in the the mud in their last instar. In spring, still in the muck and mire, they pupate and a few weeks later, the adults emerge.”  You might not want to keep this predatory Horse Fly larva with your tadpoles.

Subject:  Can’t find any info on insect
Geographic location of the bug:  South louisiana
Date: 12/13/2018
Time: 09:10 PM EDT
Your letter to the bugman:  My friend posted this picture of this bug and I’ve seen them around before but I can’t find any info on it. To me it looks like a baby graboid from the tremors movie lol please help
How you want your letter signed:  Amanda

Rat-Tailed Maggot

Dear Amanda,
Though the snorkel-like breathing tube or “tail” on the posterior appears shorter than usual, we nonetheless believe this is a Rat-Tailed Maggot, the larva of a Drone Fly.  Here is a BugGuide image for comparison.  Rat-Tailed Maggots are generally found in stagnant water rich in organic materials, like animal manure, or in very damp soil.  We wouldn’t rule out that this might be a larva of a different group of Flies, like possibly a Soldier Fly larva

Subject:  Frozen Like Han Solo
Geographic location of the bug:  a pond in northern IL
Date: 12/10/2018
Time: 11:07 PM EDT
Your letter to the bugman:  Hi.  We were hiking in the woods and saw a few of these trapped in the ice of two different shallow ponds near our home.  Each specimen was about 2 to 2.5 inches long.  I thought it must be a larvae of a pond insect, but I haven’t been able to find any that are supposed to be that big.  Any ideas?
How you want your letter signed:  Mary

Horse Fly Larva

Dear Mary,
This looks to us like the larva of a Horse Fly.  There is a matching image on Quora where it states:  “Most horse flies are associated with water, and the carnivorous larvae can be found therein.”

Thank you! and Yuck!
I appreciate your help.  I always attempt to do my own identifying, but whenever I am stuck, you always come through.
My curiosity thanks you.
Mary

Subject:  egg or pupa on milkweed
Geographic location of the bug:  Azle, Tx
Date: 08/01/2018
Time: 12:43 PM EDT
Your letter to the bugman:  I found several of these on my milkweed which was also infested with aphids.  Please help me identify this creature.
How you want your letter signed:  Joanne

Hover Fly Pupa and Oleander Aphid (at far right)

Dear Joanne,
This is the pupa of a beneficial Hover Fly or Flower Fly in the family Syrphidae, and while in the larval stage, they feed voraciously on Aphids.  Adult Hover Flies are also excellent pollinators that mimic stinging wasps and bees, though they are perfectly harmless to humans.  We located a matching image on BugGuide, and there is also a small image at the bottom of the Bugs and Critters in my Florida Back Yard blog.

Thank you!  Do you know if Hover Flies are harmful to Monarch caterpillars?
Joanne

Hi aganin Joanne.  They are not harmful to Monarch caterpillars.