Currently viewing the category: "Clothes Moth and Meal Moth Caterpillars"
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Subject: Weird worm creature
Location: Singapore
January 17, 2015 9:47 am
Hi there… I hope you can help identify this creature in my bathroom… It’s only seen in my bathroom. It freaks me out. Please help identify this.
About 1.5cm long. Has a leaf shaped soft shell it can crawl out from both ends.
Signature: Sandra from Singapore

Case Bearing Moth Larva

Case Bearing Moth Larva

Dear Sandra,
The Case Bearing Moth Larva or Household Casebearer,
Phereoeca fallax, is a common household pest that is found in many parts of the world.  You individual has a very distinctly marked case.  According to BugGuide:  “The larval case is silk-lined inside and open at both ends. The case is constructed by the earliest larval stage (1st instar) before it hatches, and is enlarged by each successive instar. In constructing the case, the larva secretes silk to build an arch attached at both ends to the substrate. Very small particles of sand, soil, iron rust, insect droppings, arthropod remains, hairs and other fibers are added on the outside. The inside of the arch is lined exclusively by silk, and is gradually extended to form a tunnel, while the larva stays inside. The tunnel is closed beneath by the larva to form a tube free from the substrate, and open at both ends. After the first case is completed, the larva starts moving around, pulling its case behind. With each molt, the larva enlarges its case. Later cases are flattened and widest in the middle, allowing the larva to turn around inside.”  The bold black and white spiral pattern on your individual’s case is likely due to fibers that were incorporated in the making of the case.

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What's That Bug? does not endorse extermination

Subject: Never seen anything like it.

Location: Victoria, Australia
December 9, 2014 3:19 pm
I have no idea what this bug is. I’m pretty sure they’re falling out of my roof through the fan in my bathroom.
It doesn’t necessarily look like a bug but they do move.
It’s about as long as a thumb nail and looks like a dirty bit of roof insulation.
Signature: TC

Case Bearing Moth Larva, we presume

Case Bearing Moth Larva, we presume

Dear TC,
We can’t imagine that this is anything other than a Case Bearing Moth Larva, though it looks different from individuals we are used to seeing, perhaps because it is using distinctly Australian building materials.

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What's That Bug? does not endorse extermination

November 13, 2014

Dear Mr. Marlos:
I found the attached, tiny cocoon-like item in my sink (of all places) the other day. When i pressed on it, out came the pictured worm. I don’t know whether to be sorry that I interrupted its chrysalis sleep or not. I suppose it depends on whether it was destined to be a beautiful butterfly or a garden pest. Can you help me to (hopefully) alleviate my guilt?
Mark Kulkis

Case Bearing Moth Larva

Case Bearing Moth Larva

Dear Mr. Kulkis,
How nice to hear from you.  This is a Case Bearing Moth Larva and it is a common household intruder.  We have one amazing image in our archives of a pack of Case Bearing Moth Larvae eating a dog biscuit.

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What's That Bug? does not endorse extermination

Subject: Strange bug
Location: Naples, FL
October 25, 2014 2:15 pm
Yesterday I found a bug in the bathroom, a type I have never seen before. Since we occasionally have silver fish, I thought it might be an odd looking one. Then today I saw something move ever so slightly at the rug’s edge [an area rug in the den]. Closer checking and it looked just like the bug I found yesterday. I got a magnifying glass and tried to figure out what it might be. I spent the last 90 minutes searching the web as best I can. No luck. I’m as puzzled now as ever. I will attach a couple of photos, though not the best, but the best I could do.
The bug measures 5/8 inches by 1/4 inch. Color appears to me to be a tan or ivory and the head appears to be a redish color.
Any ideas?
Signature: Charles Sebrell

Case Bearing Moth Larva

Case Bearing Moth Larva

case bearing moth larva

Dear Daniel Marlos,
Bravo!
That was quick.  My thanks.  I have now checked it out with that title.  Must admit, I have never seen one before.
My sincere thanks!
charles sebrell
naples, fl
Life is just simpler if you plow around the stumps.

Dear Charles,
Thanks so much for your kind response to our terse identification of a Case Bearing Moth Larva.  We have decided that your original written request was so nicely worded and your response was so kind that we retroactively determined to go live with a posting.

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What's That Bug? does not endorse extermination

Subject: Carpet Moth/Beetle
Location: United Kingdom
April 14, 2014 2:16 am
Good Morning, Please see photos of bugs collected from carpet with rice like cocoons?? Can you identify what the bug is and what the rice bits are. There are areas of carpet which have clearly been eaten and we need to identify the problem.
Many thanks
Signature: Ashley Clarke

Case Bearing Clothes Moths and Woodlice

Casemaking Clothes Moths and Woodlice

Hi Ashley,
The “bugs” are Woodlice or Pillbugs, and though they might be a nuisance indoors, they are not eating your carpet.  They are attracted to damp conditions.  The rice like cocoons appear to be the cases of Casemaking Clothes Moths,
Tinea pellionella, a species that will eat wool rugs and clothes and we believe that is the source of the damage.  According to BugGuide, the larvae feed on:  “Feed on wool, feathers, fur, hair, upholstered furniture, leather, fish meals, milk powders, lint, dust or paper.”  The larvae, not the adult moths, are responsible for the damage.  It appears that one of the cases in the center of your “collection” is a different species in the same family, a Household Casebearer Moth case, Phereoeca uterella, which according to BugGuide:  “feed on old spider webs; may also eat woolen goods of all kinds if the opportunity arises.”  BugGuide also notes:  “Larval cases can be found on wool rugs and wool carpets, hanging on curtains, or under buildings, hanging from subflooring, joists, sills and foundations; also found on exterior of buildings in shaded places, under farm sheds, under lawn furniture, on stored farm machinery, and on tree trunks.”

Many thanks really helpful
Regards,
Ashley

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Subject: Creepy Crawly
Location: Durban South Africa
March 3, 2014 9:34 am
I found these in the bathroom at night, they don’t seem to have legs but somehow can climb vertically, it crawls along by sticking its head out , grabbing hold of something and pulling itself forward , if you blow on it it retreat inside it’s shell and then sticks its head out of the other end, or is it double headed. I have a short video of this but I will send you a high def photo.
Signature: Lyn James

Case Bearing Moth Larva

Case Bearing Moth Larva

Dear Lyn,
This Case Bearing Moth Larva is either
Phereoeca fallax or a closely related species.  See BugGuide for a comparison image.  According to BugGuide:  “Larval cases can be found on wool rugs and wool carpets, hanging on curtains, or under buildings, hanging from subflooring, joists, sills and foundations; also found on exterior of buildings in shaded places, under farm sheds, under lawn furniture, on stored farm machinery, and on tree trunks” and “larvae feed on old spider webs; may also eat woolen goods of all kinds if the opportunity arises.”  We also believe the larvae will eat shed pet hair as well as human hair and other organic substances found in the home, and we have received documentation of Case Bearing Moth Larvae feeding on pet food.

Daniel thanks for the info,and the speedy response, that is fascinating, nobody around here has ever seen these thing before.

What's That Bug? does not endorse extermination