Crabs
Photo Gallery
Educational Gallery
Videos
Crab topics
Contact
Taxon tree
Infraorder
Anomura
Infraorder
Brachyura
Section
Eubrachyura
Subsection
Heterotremata
Subsection
Thoracotremata
Superfamily
Cryptochiroidea
Superfamily
Grapsoidea
Family
Gecarcinidae
Family
Glyptograpsidae
Family
Grapsidae
Family
Leptograpsodidae
Family
Percnidae
Family
Plagusiidae
Family
Sesarmidae
Family
Varunidae
Genus
Acmaeopleura
Genus
Asthenognathus
Genus
Austrohelice
Genus
Brachynotus
Genus
Brankocleistostoma
Genus
Chasmagnathus
Genus
Cyclograpsus
Genus
Cyrtograpsus
Genus
Eriocheir
Genus
Gaetice
Genus
Gopkittisak
Genus
Grapsodius
Genus
Helicana
Genus
Helice
Genus
Helograpsus
Genus
Hemigrapsus
Genus
Metaplax
Genus
Neoeriocheir
Genus
Neohelice
Genus
Noarograpsus
Genus
Orcovita
Genus
Otognathon
Genus
Paragrapsus
Genus
Parahelice
Genus
Parapyxidognathus
Genus
Platyeriocheir
Genus
Proexotelson
Genus
Pseudogaetice
Genus
Pseudograpsus
Genus
Pseudohelice
Genus
Ptychognathus
Species
Ptychognathus affinis
Species
Ptychognathus altimanus
Species
Ptychognathus andamanensis
Species
Ptychognathus barbatus
Species
Ptychognathus capillidigitatus
Species
Ptychognathus crassimanus
Species
Ptychognathus demani
Species
Ptychognathus dentatus
Species
Ptychognathus easteranus
Species
Ptychognathus glaber
Species
Ptychognathus guijulugani
Species
Ptychognathus hachijoensis
Species
Ptychognathus insolitus
Species
Ptychognathus intermedius
Species
Ptychognathus ishii
Species
Ptychognathus johannae
Species
Ptychognathus lipkei
Species
Ptychognathus makii
Species
Ptychognathus onyx
Species
Ptychognathus pilipes
Species
Ptychognathus pilosus
Species
Ptychognathus polleni
Species
Ptychognathus pusillus
Species
Ptychognathus riedelii
Species
Ptychognathus spinicarpus
Species
Ptychognathus stimpsoni
Species
Ptychognathus takahashii
Species
Ptychognathus takahasii
Genus
Pyxidognathus
Genus
Scutumara
Genus
Sestrostoma
Genus
Tetragrapsus
Genus
Thalassograpsus
Genus
Utica
Genus
Varuna
Family
Xenograpsidae
Superfamily
Ocypodoidea
Superfamily
Pinnotheroidea
Section
Podotremata
Ptychognathus takahashii
Author:
Sakai, 1939
Family:
Varunidae
WoRMS:
URL