Dirt daubers non aggressive wasps.

Joel Voron   Colonial Williamsburg Foundation
  Conservation Dept.
     Integrated Pest Management Specialist
      Office 757-220-7080
        Cell 757-634-1175
          E-Mail jvo...@cwf.org

________________________________________
From: pestlist@googlegroups.com <pestlist@googlegroups.com> on behalf of 
ktotten <ktot...@heurichhouse.org>
Sent: Monday, July 15, 2024 3:27 PM
To: MuseumPests
Subject: [PestList] Re: Bee ID - Advice on Mitigation

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Thank you for your input! This is definitely a Giant Resin Bee. After some 
research (and several more bees in the house after my first message), we have 
also noticed a series of old mud nests that we believe they are taking over. 
Any advice? Would taking down the nests be enough to keep them out of the 
house? Unfortunately I do not feel comfortable treating the windows, as they 
are historic.

On Thursday, July 11, 2024 at 3:52:06 PM UTC-4 jefctaylor wrote:
This looks to me like the giant resin bee Megachile sculptaris
In eastern North America they nest in old carpenter bee burrows, which are 
typically chewed into timbers.
On Thursday 11 July 2024 at 15:38:07 UTC-4 ktotten wrote:
I work at a historic house and recently we have seen several bees on the second 
floor office space. They are large (around 3cm long), mostly black, with large 
pinchers. After one I thought it was a fluke, but after  the fourth, I'm 
worried for the staff working in those offices.

I believe it might be a leaf-cutter bee? We have gardens behind the house with 
a pollinator garden, so bees are not unusual but they have never gotten in the 
house before.

I've already contacted our usual pest guy, but I'm hoping for help IDing and 
mitigation advice before he arrives. Any ideas?

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