No, tarantulas belong to the class Arachnida, and are in the spider family, whereas insects belong to the class Insecta. All insects have six segmented legs, a hardened exoskeleton, compound eyes, and two antennae. Spiders have eight legs, simple eyes, and no antennae. read more
Because some people think that anything with multiple legs and an exoskeleton is an insect. In reality, those who are in the know understand that tarantulas are spiders, arachnids, not insects at all. read more