Classification
Animalia [kingdom]Arthropoda [phylum]
Crustacea [subphylum]
Malacostraca [class]
Decapoda [order]
Pleocyemata [suborder]
Heterotremata [infraorder]
Potamoidea [superfamily]
Potamidae [family]
Ryukyum [genus]
Ryukyum yaeyamense [species]