Taxon tree

Infraorder Anomura
Infraorder Brachyura
- Section Eubrachyura
  - Subsection Heterotremata
    - Superfamily Aethroidea
    - Superfamily Bythograeoidea
    - Superfamily Calappoidea
    - Superfamily Cancroidea
    - Superfamily Carpilioidea
    - Superfamily Cheiragonoidea
    - Superfamily Corystoidea
    - Superfamily Dairoidea
    - Superfamily Dorippoidea
    - Superfamily Eriphioidea
    - Superfamily Gecarcinucoidea
    - Superfamily Goneplacoidea
    - Superfamily Hexapodoidea
    - Superfamily Hymenosomatoidea
    - Superfamily Leucosioidea
    - Superfamily Majoidea
      - Family Epialtidae
      - Family Hymenosomatidae
      - Family Inachidae
      - Family Inachoididae
      - Family Majidae
      - Family Mithracidae
      - Family Oregoniidae
        
        Genus Bothromaia
        
        Genus Chionoecetes
        
        Genus Ergasticus
        
        Genus Hyas
        
        Genus Macroregonia
        
        Species Macroregonia macrochira
        
        Genus Oregonia
        
        Genus Parapleisticantha
        
        Genus Pleistacantha
        
        Genus Pleisticanthoides
    - Superfamily Orithyioidea
    - Superfamily Palicoidea
    - Superfamily Parthenopoidea
    - Superfamily Pilumnoidea
    - Superfamily Portunoidea
    - Superfamily Potamoidea
    - Superfamily Pseudothelphusoidea
    - Superfamily Pseudozioidea
    - Superfamily Retroplumoidea
    - Superfamily Trapezioidea
    - Superfamily Trichodactyloidea
    - Superfamily Trichopeltarioidea
    - Superfamily Xanthoidea
  - Subsection Thoracotremata
- Section Podotremata

Macroregonia

Genus, Sakai, 1978