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Type: Monograph
Published: 2020-06-05
Page range: 1–100
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A synopsis of Typhlocarcinops Rathbun, 1909 (Crustacea: Decapoda: Brachyura: Pilumnidae), with descriptions of nine new species from the Indo-West Pacific

Lee Kong Chian Natural History Museum, National University of Singapore, Kent Ridge, Singapore 119260, Republic of Singapore
Marine Bio-industry Implementation Unit, Research Center for Oceanography, Indonesian Institute of Sciences, Dusun Teluk Kodek, Pemenang, Lombok Utara 83352, NTB. Indonesia.
Crustacea Rhizopinae Pilumnidae Typhlocarcinops Paraselwynia systematics revision new species Indo-West Pacific


The taxonomy of the Indo-West Pacific rhizopine genus Typhlocarcinops Rathbun, 1909 (Pilumnidae) is revised and 22 species are recognised. The identification of these small, soft sediment-dwelling crabs has been difficult because many of the types have never been figured and described to modern standards. The identity of the type species, T. canaliculatus Rathbun, 1909, is clarified and T. gallardoi Serène, 1964, is shown to be its junior synonym. Similarly, T. genkaiae Takeda & Miyake, 1972, and T. takedai Ng, 1987, are synonymised with T. decrescens Rathbun, 1914, and T. marginatus Rathbun, 1914, respectively. Nine new species are described: T. robustus, T. hamus, T. raouli, T. atimovatae, T. hadrotes, T. hirtus, T. diminutus, T. kanashi and T. lapillus. The various species are defined by a suite of carapace, cheliped, third maxilliped, male pleonal and male first gonopod characters. The type and only known specimen of the poorly known rhizopine Paraselwynia ursina Tesch, 1918, which is superficially similar to Typhlocarcinops, is figured and compared. A key to all known species of Typhlocarcinops is provided.



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