Damsel before dark

Some call this the pinhead wisp, for it's no larger than a needle and nearly as thin. Just about an inch long, these Agriocnemis femina swoop upon minuter flyers and fall prey themselves to larger members of their tribe. Forced by ducky indiscretions to lie low by an urban pond one evening, I found a number of these tiny damselflies resting on the blades of short grasses. They flew with reluctance, clinging to their perches despite the disturbance as if they were in greater danger of losing their way in the darkening passages through the dry rushes.