Pair of Damsels "in a wheel."
Damselflies lay their eggs in plants. Depending on the species, this may
include rotting wood, grass stems, tree bark, water lilies, the miniature pools
that form where a branch breaks off a tree, or the bases of large leaves or
stems that fill with water. The larvae of all southwestern Odonata live in water.
I got even more curious after Sam's question.
The one in the foreground is the male. Listen to this:
"The male will curl the tip of his abdoment downward then forward to his second abdominal segment. As he does this, he transfers sperm to where his penis is located.
When a receptive female comes to the water to lay her eggs, one or more potential mates will quickly approach her, often precipitating spectacular territorial battles.
Before long, a male will snatch the female from the air and grasp her with the appendages at the end of his abdomen.
If she is receptive, she will attach the tip of her abdoment to his second abdominal segment and receive his sperm."
From "Dragonflies & Damselflies of the Southwest" by Robert Behrstock.
...Interesting stuff.