For Most Complexity Comparison you need a Base. Most in what category ?
Arthropod is a Phylum so I will consider it to be asked in complexity based on Phylum Categories.
An arthropod
Hornets with their jointed limbs and chitinous exoskeletons are most definitely arthropods, under Arthropoda's subphylum Hexapoda, along with all other insects.
Nope - it's a member of the Jellyfish family, not an arthropod.
The most well-known ones are crustaceans (crabs, lobsters, water fleas etc. but also barnacles!)
Barnacles
arthropod
The Tiger Snake
Insects
An arthropod
Most likely once a year.
Vectors of the arthropod.
As the arthropod grows up, the exoskeleton sheds in order for the arthropod to grow inside of it.
A crab is an arthropod.
The Blowjob arthropod family
yes a beetle is an arthropod
The exoskeleton, made of chitin, is a characteristic that was most significant to arthropod success. It provides protection, support, and allows for efficient movement, enabling arthropods to thrive in diverse environments.
a mit is a arthropod because it has no back bone