Ptychognathus

Ptychognathus includes 28 children:

• Ptychognathus affinis De Man 1895
• Ptychognathus altimanus (Rathbun 1914)
• Ptychognathus andamanensis Pretzmann 1984
• Ptychognathus barbatus (A. Milne-Edwards 1873)
• Ptychognathus capillidigitatus Takeda 1984
• Ptychognathus crassimanus Finnegan 1931
• Ptychognathus demani Roux 1917
• Ptychognathus dentatus De Man 1892
• Ptychognathus easteranus Rathbun 1907
• Ptychognathus glaber Stimpson 1858
• Ptychognathus guijulugani Rathbun 1914
• Ptychognathus hachijoensis Sakai 1955
• Ptychognathus insolitus Osawa & Ng 2006
• Ptychognathus intermedius (De Man 1879)
• Ptychognathus makii Hsu & Shih 2020
• Ptychognathus onyx Alcock 1900
• Ptychognathus polleni De Man 1895
• Ptychognathus sakaii Hsu, Shih & Li 2022
• Ptychognathus stimpsoni Hsu & Shih 2020
• Ptychognathus takahasii Sakai 1939
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