A new species of Gaillardiellus Guinot, 1976 (Crustacea, Brachyura, Xanthidae) from the coral reefs of the South China Sea

Authors: Yuan, Ziming DOI: 10.3897/zookeys.1234.144026 Published: Jan. 1, 2025 Source: ZooKeys OpenAlex: View in OpenAlex

Collection: Pensoft Publishers

Keywords: Actaeinae · Topics: Coral and Marine Ecosystems Studies, Marine and fisheries research, Crustacean biology and ecology

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A new xanthid species of Gaillardiellus Guinot, 1976, is described from the coral reefs of the Xisha and Nansha Islands in the South China Sea. The new species, Gaillardiellus magiruber sp. nov., closely resembles G. rueppellii (Krauss, 1843) but can be distinguished mainly by its closer proximity of the outer orbital angle and anterolateral margin, which lacks an accessory lobe, a broader and non-protruding front, and notable differences in live coloration and size. Molecular analysis of mitochondrial cytochrome c oxidase I (COI) sequences further corroborates the validity of this new species. An updated identification key for Gaillardiellus is provided.

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