What Are 6 Legged Invertebrates Called?

What Are 6 Legged Invertebrates Called? Six-legged insects are classified as arthropods, but there are other arthropod species that have more than six legs, including arachnids, or spiders, and centipedes. Crustaceans, diplopods and hexapods are also within the arthropod classification. Which arthropods have six legs? Arthropods include spiders, which have eight legs, and six-legged insects,