A female Clamp-tipped Emerald (formerly known as Twilight Bog Skimmer). It is an uncommon dragonfly, but not one in a rare or endangered category. Also, noticeable is that the last third or so of her abdomen is covered in a light layer of dirt showing she had been ovipositing, maybe even earlier that day, possibly in moss (maybe the sphagnum of the bog?), decaying leaves, or mud (according to Paulson in Dragonflies & Damselflies of the East).