Coelioxys gilensis, m, left, Mariposa CA
The taper looks of a nest parasite of Megachile. This is Coelioxys gilensis. Found in Yosemite National park and collected for a project done by Lauren Ponisio examining the effect of fire diversity on bees (Ponisio et al. Global Change Biol. 2016).
Beauty is truth, truth beauty - that is all
Ye know on earth and all ye need to know
" Ode on a Grecian Urn"
John Keats. Original public domain image from Flickr