Taxon tree

Infraorder Anomura
- Superfamily Aegloidea
- Superfamily Chirostyloidea
- Superfamily Galatheoidea
- Superfamily Hippoidea
- Superfamily Lithodoidea
  - Family Hapalogastridae
    - Genus Acantholithodes
    - Genus Dermaturus
    - Genus Hapalogaster
      - Species Hapalogaster cavicauda
      - Species Hapalogaster dentata
      - Species Hapalogaster grebnitzkii
      - Species Hapalogaster mertensii
    - Genus Oedignathus
    - Genus Placetron
  - Family Lithodidae
- Superfamily Lomisoidea
- Superfamily Paguroidea
Infraorder Brachyura

Hapalogaster

Genus, Brandt, 1850

Hapalogaster dentata, 大土直哉 Naoya Ohtsuchi