Taxon tree

Infraorder Anomura
Infraorder Brachyura
- Section Eubrachyura
  - Subsection Heterotremata
  - Subsection Thoracotremata
    - Superfamily Cryptochiroidea
      - Family Cryptochiridae
        
        Genus Cecidocarcinus
        
        Genus Cryptochirus
        
        Genus Dacryomaia
        
        Genus Detocarcinus
        
        Genus Fizesereneia
        
        Genus Fungicola
        
        Genus Hapalocarcinus
        
        Genus Hiroia
        
        Species Hiroia krempfi
        
        Genus Kroppcarcinus
        
        Genus Lithoscaptus
        
        Genus Luciades
        
        Genus Neotroglocarcinus
        
        Genus Opecarcinus
        
        Genus Pelycomaia
        
        Genus Pseudocryptochirus
        
        Genus Pseudohapalocarcinus
        
        Genus Sphenomaia
        
        Genus Troglocarcinus
        
        Genus Utinomiella
        
        Genus Xynomaia
        
        Genus Zibrovia
    - Superfamily Grapsoidea
    - Superfamily Ocypodoidea
    - Superfamily Pinnotheroidea
- Section Podotremata

Hiroia

Genus, Takeda & Tamura, 1981