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  1. #1
    Join Date
    Feb 2011
    Location
    SLC, UT
    Posts
    224

    Default What are these cocoons in my Mason Bee reeds?

    When I harvested my reeds last fall I found a few reeds with these in them. I can't seem to find what these are. Any ideas? If they are a pest I'll destroy them, but I don't want to kill a beneficial insect.


    mudcocoons01.jpg

    mudcocoons02.jpg

  2. #2
    Join Date
    May 2012
    Location
    Clarendon County, SC, USA
    Posts
    116

    Default Re: What are these cocoons in my Mason Bee reeds?

    Dirt Dauber (aka mud wasp)- they catch spiders, lay eggs in them, and then wall them up in those little chambers to hatch. They don't hurt anything, they don't normally sting. They are quite annoying due to their habit of building those mud nests in places you don't want them, like up in gas burners.

  3. #3
    Join Date
    Feb 2011
    Location
    SLC, UT
    Posts
    224

    Default Re: What are these cocoons in my Mason Bee reeds?

    Thanks for the help! I didn't even think to check the solitary wasps. I'll put 'em back out and let them be.

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