Happy Fourth (Crab Spider)!

Happy Fourth of July!  To celebrate the date, here is a picture with four crab spiders, including one happy spider with a fly.

Can you find all four crab spiders?

In case you had any trouble spotting all the spiders, here is the picture again, with the spider locations marked...

Three female and one male Misumena vatia crab spiders.

 ... and here is a closeup of the happy spider with her large meal.

The most successful of the four spiders, eating a fly.