Hexapoda is a class of animals within the phylum Arthropoda, which includes insects and their close relatives. They are characterized by having six legs, a three-part body structure consisting of a head, thorax, and abdomen, and often possess wings. This diverse group includes familiar creatures like beetles, butterflies, and ants. Hexapods are the most numerous and varied group of animals on Earth, with millions of species identified. They play essential roles in ecosystems, such as pollination, decomposition, and serving as food for other animals. Their adaptability allows them to thrive in nearly every habitat, from forests to deserts.