odin wrote:
Aren't scorpions part of the same family/group in which lobsters/crabs/centipedes belong?
Not quite.
ExplanationBasically scorpions, harvestmen and spiders are arachnids - exoskeleton and 8 legs.
Crabs and lobsters have a shell, not an exoskeleton.
And a centipede is just a creepy-crawlie :-P
--edit--
Actually, from
this pageArachnids (Spiders, scorpions, mites, ticks) and Meristomata (Horseshoe crabs) are both Chelicerates, so they are connected in a way.