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)

The collection sites of Ptychognathus dajie sp. nov. in East and Southeast Asia. Solid symbols mean collection sites of specimens used in present study; empty symbols mean the additional records only from references. 1–11 refer to Table 1; 12, Lanyu Island, Taiwan; 13, Miyako Islands, Japan; 14, Amami Island, Japan; 15, Kochi and Ehime, Japan; 16, Kanagawa, Japan; 17, Izu Islands, Japan; 18, Guangdong, China; 19, Negros, the Philippines; 20, Cebu, the Philippines; 21, Tioman Island, Malaysia; 22, Penang, Malaysia; 23, Phuket, Thailand; 24, Ternate, Indonesia; 25, Ambon Island, Indonesia.