Scale

[centuryplant]

Dusky Clubtails are brown-and-yellow dragonflies about two inches long. They look virtually identical to Ashy Clubtails, so for a positive identification, you need close-up photos showing the shape of small details, like a downward-pointing spike on the claspers at the end of the male's abdomen:

I was using the camera's LCD to zoom in on the claspers, so I never even saw this tiny white insect. It must have landed there for a moment and then flown away again.

Here's what the whole dragonfly looks like: