Foliage Flower Spiders
All crab spiders generally resemble crabs: Their legs extend outward from the sides, and they can walk in any direction. Most live in flowers and capture prey simply by grabbing and biting it.
The more obvious differences between this group and other crab spiders is that these generally are smaller, and their carapaces, abdomens, and legs are spiny. Size alone is not a good character for distinguishing species, for some adults and spiderlings are similar in size and appearance. Here are some common species.
Misumessus oblongus has spines, and the entire body and legs are pale green to silvery white.
Mecaphesa asperatus, the northern crab spider, has many spiny hairs covering the top surfaces of the carapace, abdomen, and legs, and it has greenish-yellow or yellow-brown markings (similar to those on the ridge-faced crab spider).
Mecaphesa celer, the swift crab spider, has similar markings, though its overall coloration often has a light tan-pink cast.