A dragonfly eating another dragonfly.
The green dragonfly is eating the dark dragonfly. Notice the head of the dark dragonfly, off to the side.
Video taken by Alissa Nordstrom.
The Union Democrat ran an article on Prionus beetles.
Although Prionus and Ergates are both large beetles that look very similar, you can tell them apart by examining the spines located behind the head, on the forward part of the thorax.
Prionus has three spines on each side of the pronotum, while Ergates has numerous small spines. Please see the photos.
Female California Prionus beetles. Photo by Alice Anderson
Closeup of spines on prothorax of California Prionus:
Close-up of head of the right side above female:
Solpugid, or sun spider, or camel spider.
Click on an image to enlarge it.