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329 Views 3 Replies Last post: Feb 7, 2014 8:36 PM by MikeHardman RSS
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Feb 7, 2014 7:55 PM

Long (around 2") cocoon on my living room wall

Hi all,

 

This appeared on my living room wall this afternoon! It's about 2" long (sorry for the bad photo) and has a slight curve at one end. Any ideas of what it is? Do I need to evict it?

 

I'm based in Devon, if that helps at all!

 

Thanks,

 

Steph

photo (5).jpg

  • Currently Being Moderated
    Feb 7, 2014 8:19 PM (in response to stephaniejb)
    Re: Long (around 2") cocoon on my living room wall

    Stephanie,

     

    It's really difficult from that photo!

     

    But, as well as a coccoon, I think you should consider it being a case-bearing larva of some sort.

    Keep an eye on it. If it moves (like by tomorrow morning), it is not a coccoon, it is a case-bearing larva.

     

    There are quite a few larvae who protect themselves by carrying around a tube with them, and hiding inside it. The tube can be built of various types of detritus (tiny stones, fragments of dead plant material, etc.)

    Here's an example - Luffia ferchaultella, a moth - http://www.conwy-camera-club.org/?p=6680.

    And here's a video of a bagworm moth larva, its 'bag' being composed of little sticks - https://www.youtube.com/watch?v=BKo3muYIXGE

     

    Whereas some insects have evolved over great periods of time to accomplish camouflage through their skin (and maybe their shape) mimicing their surroundings, these case-bearing larvae actually use their surroundings directly as a means of camouflage. It is a neat trick.

     

    So what's it doing in your house?

    We'll get to that once we have a better photo, hopefully?!

     

    BTW, it is probably harmless.

     

    Mike

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