A new species of Ptychognathus Stimpson, 1858, from East and Southeast Asia, previously identified as Ptychognathus barbatus (A. Milne-Edwards, 1873) (Crustacea, Decapoda, Brachyura, Varunidae)


	Ptychognathus dajie sp. nov. A, B. Holotype male (13.2 × 11.6 mm, ZRC 2024.0072); C, D. Paratype female (10.6 × 9.2 mm, NCHUZOOL 17356); E. Male (NCHUZOOL 17341); F. Male (NCHUZOOL 17343); G, H. Males (NCHUZOOL 17342). A, C. Dorsal view; B, D. Ventral view; A–D. Preserved specimens; E–H. Color in life.

Part of: Hsu J-W, Mendoza JCE, Shih H-T (2025) A new species of Ptychognathus Stimpson, 1858, from East and Southeast Asia, previously identified as Ptychognathus barbatus (A. Milne-Edwards, 1873) (Crustacea, Decapoda, Brachyura, Varunidae). ZooKeys 1243: 269-288. https://doi.org/10.3897/zookeys.1243.152263