A new ghost shrimp of the genus Pugnatrypaea (Decapoda, Axiidea, Callianassidae) from the South China Sea

A new species of the genus Pugnatrypaea Poore, Dworschak, Robles, Mantelatto & Felder, 2019, Pugnatrypaea ruiyui sp. nov., collected from the northern South China Sea, is described and illustrated. It is distinguishable from P. pugnatrix (de Man, 1905), P. iranica (Sepahvand, Momtazi & Tudge, 2015), and P. emanata Felder & Robles, 2020 in having the lower margin of the male major cheliped merus lacking a proximal hook. It is distinguishable from P. intermedia (de Man, 1905) and P. lobetobensis (de Man, 1905) in having the upper margins of both cheliped meri unarmed. A key to all species of Pugnatrypaea is provided