What is a twenty legged arthropod called?

A twenty-legged arthropod is commonly referred to as a "decapod," which typically includes crustaceans like crabs and lobsters. However, the term "decapod" specifically means "ten-footed," so a more accurate classification for an arthropod with twenty legs would be a "dodecapod," but this term is not commonly used. Most arthropods have varying numbers of legs, with many insects having six and myriapods like centipedes and millipedes having numerous legs.