Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


TaxonomyBrowseInfoImagesLinksBooksData
Photo#845414
Megachile - nest site competition? - Megachile angelarum - female

Megachile - nest site competition? - Megachile angelarum - Female
Portland, Multnomah County, Oregon, USA
July 28, 2013
Size: ~11mm
I put out a block of fir in late June, with several 5mm holes drilled ~6" deep in the end grain. It filled up over several weeks during mid-summer. The nests seem to be constructed of a paste of green plant material with a final cap of mud. One day this female spent a good hour clamped onto the butt of another individual, as shown here. I interpret this as competition for the nest cavity, as opposed to mate guarding or something else. Any insights are appreciated!

Images of this individual: tag all
Megachile - nest site competition? - Megachile angelarum - female Megachile - nest site competition? - Megachile angelarum - female

Moved
Moved from ID Request.

 
thanks!
It's extra gratifying to find out the actual species. I usually try not to get my hopes up.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.