Twelve-Spotted Skimmer
Libellula pulchella
"Its distinct wing pattern
of dark brown or black wing spots, basally, at the nodus, and
at the wing tips, will readily distinguish it from most dragonflies
in the region ... The mature males develop two white spots in
each forewing and three in each hindwing, resulting in their
traditional common name, 'ten spot.' The species has more recently
been given the name 'twelve spot' to represent the more conspicuous
brown spots on each wing."
September 20, 2014.