Grasshoppers and Lobsters belong to the phylum Euarthropoda.
Euarthropoda includes insects (like Grasshopper), myriapods, arachnids and crustaceans (like Lobsters). Common characteristics are exoskeleton (external skeleton), a segmented body, and paired jointed appendages. Their body is enveloped with cuticle made of chitin, which is often mineralised with calcium carbonate.