Baba, K., Corbari, L. & Macpherson, E. (2024). Chirostylidae of the western Indian Ocean (Crustacea: Decapoda: Anomura). In Corbari, L. & Castelin, M. (eds.),Tropical Deep-Sea Benthos, vol 34: Deep-Sea Chirostylids and Stylasterids from South-West Indian Ocean. Paris: Muséum national d'Histoire naturelle, 13-221 p. (Mémoires du Muséum national d'Histoire naturelle; 218). ISBN: 978-2-38327-017-1.

498750

Baba, K., Corbari, L. & Macpherson, E.

2024

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The systematics of the squat lobster family Chirostylidae (Crustacea: Anomura: Chirostyloidea) from the western Indian Ocean is reviewed based on material largely in the collections of the Muséum national d’Histoire naturelle (MNHN), and additional material collected by the RV JAMES COOK cruise 2012 to the Southwest Indian Ridge, the International Indian Ocean Expedition 1964 (IIOE ANTON BRUUN cruises) to the western Indian Ocean and the Spanish Institute of Oceanography (IEO) cruises to Mozambique. The collection of the JOHN MURRAY EXPEDITION (1934–35) previously reported from the northwestern Indian Ocean was also examined. This paper reports that the western Indian Ocean harbors 66 chirostylid species other than Hapaloptyx difficilis Stebbing, 1920, the systematic status of which remains unsettled: two of Chirostylus, four of Gastroptychus including three new and one unnamed species, four of Heteroptychus including two new and one unnamed species, one unnamed species of Uroptychodes, and 55 of Uroptychus including 29 new species. The genera Gastroptychus and Uroptychodes are recorded for the first time from this region. The majority of the species, 58 species (88%), are restricted to the western Indian Ocean, eight species (12%) are widely distributed in the Indo-West Pacific. The morphological characteristics of each species are provided and relationships and/or discriminating characters among similar species are discussed. Genetic data where available, are used to verify or assess the morphology based identifications. Keys to species of all the genera from the western Indian Ocean are given.

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