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| Tropichelura barasu Tokumori, Kakui & Tomikawa, 2025 |
ABSTRACT
A new species of chelurid amphipod, Tropichelura barasu sp. n., is described from off Iriomote and Uchipanari Islands, Okinawa, Japan. The genus Tropichelura is known to comprise only two species, both recorded from tropical and subtropical oceans; this is the first record of the genus from Japan. Tropichelura barasu sp. n. differs from its congeners in the shape of antenna 1 and gnathopod 1, the shape and armature of uropods, and the shape and setation of the telson. A key to the species of Tropichelura is provided. In addition, the nucleotide sequence of the mitochondrial cytochrome c oxidase subunit I (COI) gene from a paratype specimen was determined for future studies.
KEYWORDS: COI, Corophiida, defensive behaviour, Okinawa, Pacific, taxonomy
Tropichelura barasu sp. n.
Daigo Tokumori, Keiichi Kakui and Ko Tomikawa. 2025. A New Species of Tropichelura (Crustacea: Amphipoda: Cheluridae) from the Ryukyu Islands, Japan. Journal of Natural History. 59(45-48); 2657-2672. DOI: doi.org/10.1080/00222933.2025.2586682 [08 Dec 2025]
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