Anax junius exuviae
Masses of A. junius (and less probably, a few A. longipes) exuviae.
I estimated there must have been at least 500 easily visible Anax sp. exuviae on the route I walked.
There were more in adjacent vegetation that was out of/farther away from the ponds' edges but I did not search for or count them.
Very cool to see. Obviously they didn't all come out on one day but I would like to go one morning and see, even if just a handful were emerging at once/readily visible.
I'm extremely curious how many/what general percentages are predated. The site chosen for ecdysis ranged from dense brush to dead twigs directly in the open, as seen here.