It looks like a species of Megachilidae family of bees, solitary and leaf eaters, covered in pollens.
It could be from Genus Megachile.
All its identifying features are hidden though:
T1 segments have 2 “sides”, one that faces forward or faces the thorax and one that faces the top.$^1$
In Megachile, the “corner” where the forward side and the top side meet is severe. It creates a flat or concave appearance like a circular shelf.$^2$
This genus it comparable to Lithurgopsis which
has a more gradual transition to the "sides" of T1.$^3$