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
      - Family Hexapodidae
        
        Genus Hexalaughlia
        
        Genus Hexapinus
        
        Genus Hexaplax
        
        Genus Hexapus
        
        Genus Lambdophallus
        
        Species Lambdophallus sexpes
        
        Genus Latohexapus
        
        Genus Mariaplax
        
        Genus Paeduma
        
        Genus Parahexapus
        
        Genus Pseudohexapus
        
        Genus Rayapinus
        
        Genus Spiroplax
        
        Genus Stevea
        
        Genus Thaumastoplax
        
        Genus Theoxapus
        
        Genus Tritoplax
    - Superfamily Hymenosomatoidea
    - Superfamily Leucosioidea
    - Superfamily Majoidea
    - 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

Lambdophallus

Genus, Alcock, 1900