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Re: [beemonitoring] Megachile nests constructed in the open?

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  • Chris McDonald
    I have seen a Megachile construct nests inside a cinderblock wall. Well I didn t exactly see inside the wall (as per my lack of x-ray goggles) nor did I tear
    Message 1 of 4 , Mar 28, 2011
      I have seen a Megachile construct nests inside a cinderblock wall. Well I didn't exactly see inside the wall (as per my lack of x-ray goggles)  nor did I tear down the wall to look inside. But she did deposit pieces of leaves into the large cavity of the cinderblock for a few weeks in Tucson, AZ. How she arranged them inside the cavity is another story.


      On 3/28/11 9:39 AM, Jack Neff wrote:
      Doug:  I have seen stacks of freestanding, cells of Megachile brevis constructed in a the large cavity of an electrical switch box so at least some Megachile can construct thimble type nests without the lateral constraints of walls.  Building individual freestanding cells like those in the picture would be much more difficult and could well be the results of predation by some evil bird, as you suggest.


      John L. Neff
      Central Texas Melittological Institute
      7307 Running Rope
      Austin,TX 78731 USA

      From: Doug Yanega <dyanega@...>
      To: beemonitoring@yahoogroups.com
      Sent: Mon, March 28, 2011 11:19:55 AM
      Subject: Re: [beemonitoring] Megachile nests constructed in the open?


      > I'm curious to hear if anyone has seen anything like this before,
      >or has any insights to offer.

      I'm willing to go out on a limb and state that it is impossible for a
      Megachile to construct a cell without it being in an enclosed space;
      there is simply no other way for the leaf bits comprising the walls
      to be given the correct contour.

      Therefore, the only possibility is that these cells all were
      constructed somewhere other than where they were found and
      photographed. The most likely scenario I can see is a bird or small
      mammal pulling cells out of a cavity, and either flinging them away
      or dropping them (possibly while attempting to carry them).


      Doug Yanega Dept. of Entomology Entomology Research Museum
      Univ. of California, Riverside, CA 92521-0314 skype: dyanega
      phone: (951) 827-4315 (standard disclaimer: opinions are mine, not UCR's)
      "There are some enterprises in which a careful disorderliness
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