A NEW SPECIES OF BYTHOGRAEID CRAB, AUSTINOGRAEA RODRIGUEZENSIS (DECAPODA, BRACHYURA), ASSOCIATED WITH ACTIVE HYDROTHERMAL VENTS FROM THE INDIAN OCEAN

Shinji Tsuchida; Jun Hashimoto

doi:10.1651/0278-0372(2002)022[0642:ANSOBC]2.0.CO;2

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1 August 2002 A NEW SPECIES OF BYTHOGRAEID CRAB, AUSTINOGRAEA RODRIGUEZENSIS (DECAPODA, BRACHYURA), ASSOCIATED WITH ACTIVE HYDROTHERMAL VENTS FROM THE INDIAN OCEAN

Shinji Tsuchida, Jun Hashimoto

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J. of Crustacean Biology, 22(3):642-650 (2002). https://doi.org/10.1651/0278-0372(2002)022[0642:ANSOBC]2.0.CO;2

Abstract

Austinograea rodriguezensis sp. nov. is the first bythograeid crab to be described from the Indian Ocean. Specimens were collected from 22 km north of the Rodriguez Triple Junction, at 2,420 to 2,450 m depth, during the KR00-05 Indian Ocean Cruise (JAMSTEC) in August 2000. This is the fourth species of the genus Austinograea described and the tenth in the family Bythograeidae. This crab inhabits black smoker complexes (temperature 360°C, pH 3.4) with other vent-associated animals, including Rimicaris shrimps, Bathymodiolus mussels, Alviniconcha snails, unidentified actiniarians, and zoarcid fish. Austinograea rodriguezensis differs remarkably from the other three species of Austinograea in the male gonopod and chela morphology. However, other characters of the species are very similar to Austinograea williamsi. A key to the species of the genus Austinograea is provided.

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Shinji Tsuchida and Jun Hashimoto "A NEW SPECIES OF BYTHOGRAEID CRAB, AUSTINOGRAEA RODRIGUEZENSIS (DECAPODA, BRACHYURA), ASSOCIATED WITH ACTIVE HYDROTHERMAL VENTS FROM THE INDIAN OCEAN," Journal of Crustacean Biology 22(3), 642-650, (1 August 2002). https://doi.org/10.1651/0278-0372(2002)022[0642:ANSOBC]2.0.CO;2

Received: 8 May 2001; Accepted: 3 October 2001; Published: 1 August 2002

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