Classification
Animalia [kingdom]Arthropoda [phylum]
Crustacea [subphylum]
Malacostraca [class]
Decapoda [order]
Pleocyemata [suborder]
Heterotremata [infraorder]
Portunoidea [superfamily]
Portunidae [family]
Polybius [genus]
Polybius henslowii [species]