In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

One modern group in this phylum possessing single-branched appendages is called Uniramia. Different body plan arrangements in members of this phylum are called tagmata, and members of this phylum possess an excretory system consisting of hemolymph-bathed channels called (*) Malphigian tubules. Members of this phylum may possess ocelli or ommatidia for visual perception. A waxy outer layer helps protect these creatures' inner "procuticle," the chitin-containing layers of their exoskeletons. Members of this phylum also possess jointed appendages and a three-segment body plan. For 10 points, name this phylum that includes crabs, spiders, and insects.
Science