This beautiful pale green male anthelid had a wing span of about 50 mm. A thin deep reddish-brown line through both fore wings from costa to the inner margins. Similar but a dark straight line and a zigzag were seen on hind wings as in most anthelids.
The head and legs of this species were grey giving it it's common name. The feathery antennae were brown.
This couple (male on left higher) was busy working on the next generation. After a quick mating the male flew down and collected some nesting materials. The female remained "fluffed-up" as seen in photo. The morning was a bit cold for the area, perhaps she was a little chilly.
There were about 6 of them running around, quarreling with each other and feeding on the underside of Spatterdock leaves. I like how they meticulously fold back the lobes of the leaves with their feet to get to where the stem meets the base of the leaves.