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
    - Superfamily Orithyioidea
    - Superfamily Palicoidea
    - Superfamily Parthenopoidea
    - Superfamily Pilumnoidea
    - Superfamily Portunoidea
    - Superfamily Potamoidea
    - Superfamily Pseudothelphusoidea
    - Superfamily Pseudozioidea
    - Superfamily Retroplumoidea
    - Superfamily Trapezioidea
    - Superfamily Trichodactyloidea
      - Family Trichodactylidae
        
        Genus Avotrichodactylus
        
        Genus Bottiella
        
        Genus Dilocarcinus
        
        Genus Forsteriana
        
        Genus Fredilocarcinus
        
        Genus Goyazana
        
        Genus Melocarcinus
        
        Species Melocarcinus meekei
        
        Genus Moreirocarcinus
        
        Genus Poppiana
        
        Genus Rodriguezia
        
        Genus Rotundovaldivia
        
        Genus Sylviocarcinus
        
        Genus Trichodactylus
        
        Genus Valdivia
        
        Genus Zilchiopsis
    - Superfamily Trichopeltarioidea
    - Superfamily Xanthoidea
  - Subsection Thoracotremata
- Section Podotremata

Melocarcinus

Genus, Magalhães & Türkay, 1996