Taxon tree

Infraorder Anomura
Infraorder Brachyura
- Section Eubrachyura
- Section Podotremata
  - Superfamily Cyclodorippoidea
    - Family Cyclodorippidae
    - Family Cymonomidae
    - Family Phyllotymolinidae
      - Genus Genkaia
        
        Species Genkaia gordonae
        
        Species Genkaia keijii
      - Genus Lonchodactylus
      - Genus Phyllotymolinum
  - Superfamily Dromioidea
  - Superfamily Homolodromioidea
  - Superfamily Homoloidea
  - Superfamily Raninoidea

Genkaia

Genus, Miyake & Takeda, 1970