taxonID	type	description	language	source
03EC87CCE12ED614EECEFBF3FC91BB8F.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ov. ♀ (3.0 mm); SAYA stn DW 5424; 11 ° 28 ′ S, 62 ° 01 ′ E; 150 – 171 m depth; 12 Nov. 2022; MNHN-IU- 2021 - 5793.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12ED614EECEFBF3FC91BB8F.taxon	distribution	Distribution Only known from the Mozambique Channel, at 450 m. The Saya de Malha specimen is the second occurrence of the species, at depths of 150 – 171 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12ED614ED46FA5BFAF4B902.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 3 ♂♂ (5.1 – 8.1 mm); SAYA stn CP 5412; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 7 Nov. 2022; MNHN-IU- 2021 - 5776, MNHN-IU- 2021 - 5777.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12ED614ED46FA5BFAF4B902.taxon	distribution	Distribution Widely distributed in the Indian Ocean, from Madagascar to South Arabian coast, Maldives, and Andaman Sea, and western Pacific, from Japan to New Zealand (see Baba et al. 2024), between 396 and 1395 m. The present material was collected slightly deeper than previous records, at 1396 – 1441 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12FD615EEE9FD7BFC68BA9D.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ov. ♀ (4.5 mm); SAYA stn YR 09; 09 ° 55.3 ′ S, 60 ° 54 ′ E: 19 m depth; 8 Nov. 2022; MNHN-IU- 2022 - 330 • 1 ♂ (2.0 mm), 1 ov. ♀ (4.2 mm); SAYA stn YR 15; 10 ° 22.7 ′ S; 62 ° 07.7 ′ E; 24 m depth; 10 Nov. 2022; MNHN-IU- 2021 - 5794 • 1 juv. (1.5 mm); SAYA stn YR 17; 10 ° 12.1 ′ S, 62 ° 09.1 ′ E; 27 m depth; 11 Nov. 2022; MNHN-IU- 2021 - 5795.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12FD615EEE9FD7BFC68BA9D.taxon	distribution	Distribution Previously known from Mozambique, Japan, Thailand, Indonesia (Gorong Island), Vanuatu, New Caledonia and Chesterfield Islands, between 44 and 120 m deep. Usually living on crinoids. The present material was collected in Saya de Malha Bank, at depths of 19 – 27 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12FD615EEB6FA4CFD2FB90A.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♂ (2.2 mm); SAYA stn YR 05; 10 ° 37.2 ′ S, 60 ° 10.3 ′ E; 39 m depth; 6 Nov. 2022; MNHN-IU- 2021 - 5792 • 1 ov. ♀ (2.6 mm); SAYA stn YR 31; 16 ° 36.1 ′ S, 59 ° 30.4 ′ E; 30 m depth; 21 Nov. 2022; MNHN-IU- 2021 - 5812.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12FD615EEB6FA4CFD2FB90A.taxon	distribution	Distribution Red Sea, Madagascar, South China Sea (Macclesfield Bank), Vanuatu, on rocky and coral areas, at 2 – 77 m. Saya de Malha Bank at 30 – 39 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12FD615EEBFFE8BFC57BC74.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♀ (11.0 mm); SAYA stn CP 5442; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 17 Nov. 2022; MNHN-IU- 2022 - 295.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12FD615EEBFFE8BFC57BC74.taxon	distribution	Distribution Previously known from Mayotte and Madagascar, at depths of 302 – 660 m. The occurrence in the Saya de Malha Bank was deeper than previous records, at 1396 – 1441 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612ED40FE8BFB9DBC7E.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♀ (1.8 mm); SAYA stn YR 19; 10 ° 44 ′ S, 62 ° 00.4 ′ E; 30 m depth; 11 Nov. 2022; MNHN-IU- 2021 - 5779.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612ED40FE8BFB9DBC7E.taxon	distribution	Distribution Known from Japan, Taiwan, South China Sea, Sibuyan Sea, Western Australia, Red Sea, Madagascar, at 10 – 87 m. The specimen from Saya de Malha Bank was collected at 30 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612EE06FDE6FAB2BDA3.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ov. ♀ (3.4 mm); SAYA stn DW 5424; 11 ° 28 ′ S, 62 ° 01 ′ E; 150 – 171 m depth; 12 Nov. 2022; MNHN-IU- 2021 - 9160.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612EE06FDE6FAB2BDA3.taxon	distribution	Distribution Previously only known by the holotype collected in the Glorieuses Islands, Mozambique Channel, at 219 – 224 m. This second occcurrence in Saya de Malha Bank was found at depths of 150 – 171 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612ED34FBC2FC1EB87D.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 4 ♂♂ (1.4 – 2.0 mm), 1 juv. (1.5 mm); SAYA stn YR 05; 10 ° 37.2 ′ S, 60 ° 10.3 ′ E; 39 m depth; 6 Nov. 2022; MNHN-IU- 2021 - 5789 • 1 ♂ (2.0 mm); SAYA stn YR 07; 09 ° 55.5 ′ S, 60 ° 54.2 ′ E; 25 m depth; 7 Nov. 2022; MNHN-IU- 2022 - 843 • 1 ♂ (3.6 mm); SAYA stn YR 17; 10 ° 12.1 ′ S, 62 ° 09.1 ′ E; 27 m depth; 11 Nov. 2022; MNHN-IU- 2022 - 821 • 3 ♂♂ (2.6 – 3.0 mm), 3 ♀♀ (1.2 – 1.6 mm); SAYA stn YR 21; 10 ° 44 ′ S, 62 ° 00.8 ′ E; 47 m depth; 11 Nov. 2022; MNHN-IU- 2021 - 5787 to MNHN-IU- 2021 - 5791.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612ED34FBC2FC1EB87D.taxon	distribution	Distribution Widely distributed in the Indian and West Pacific oceans, from Seychelles Islands, Mayotte Island, Scattered Islands, Mozambique, Madagascar, Maldives Islands, Japan, Taiwan, Philippines, South China Sea, Vanuatu, Papua New Guinea, Queensland and New Caledonia, at depths of 0 – 153 m. The material from Saya de Malha Bank was collected at depths of 25 – 47 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612EE5EF924FE2CB9E1.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♂ (1.2 mm); SAYA stn YS 04; 11 ° 08.2 ′ S, 60 ° 26.8 ′ E; 37 m depth; 6 Nov. 2022; MNHN-IU- 2022 - 774.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE128D612EE5EF924FE2CB9E1.taxon	distribution	Distribution South West Indian Ocean, Madagascar, La Réunion Island and Walter Shoals, Saya de Malha Bank, at depths of 18 – 120 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE129D613ED37FA2FFEEBB969.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♂ (8.0 mm), 2 ov. ♀♀ (14.5 – 15.2 mm); SAYA stn CP 5412; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 7 Nov. 2022; MNHN- IU- 2021 - 5780, MNHN-IU- 2021 - 5781.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE129D613ED37FA2FFEEBB969.taxon	distribution	Distribution Indian Ocean, from East African coast to India, Sri Lanka, Laccadive Sea, and Makassar Strait (Indonesia); Pacific Ocean from Japan, Philippines, Solomon Islands, Papua-New Guinea, New Caledonia, to off Juan Fernandez, Chile, between 840 and 3800 m. Saya de Malha Bank at depths of 1396 – 1441 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE129D613EEF2FC63FB67BB1E.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 22 ♂♂ (9.4 – 14.7 mm), 20 ov. ♀♀ (11.5 – 13.6 mm), 7 ♀♀ (3.6 – 4.8 mm); SAYA stn CP 5436; 11 ° 50 ′ S, 60 ° 56 ′ E; 300 – 312 m depth; 6 Nov. 2022; MNHN-IU- 2021 - 5773, MNHN-IU- 2021 - 9157, MNHN-IU- 2022 - 294.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE129D613EEF2FC63FB67BB1E.taxon	distribution	Distribution Mozambique, at depths of 200 – 505 m. Saya de Malha Bank between 300 and 312 m deep.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE129D613EEC2FEEEFD89BCCB.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♂ (3.0 mm), 1 ♀ (2.1 mm); SAYA stn YS 20; 11 ° 54 ′ S, 62 ° 00.4 ′ E; 47 m depth; 13 Nov. 2022; MNHN-IU- 2021 - 5782, MNHN- IU- 2021 - 5783 • 1 ov. ♀ (3.2 mm); SAYA stn YR 22; 11 ° 54 ′ S, 62 ° 00.4 ′ E; 47 m depth; 13 Nov. 2022; MNHN-IU- 2022 - 754.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE129D613EEC2FEEEFD89BCCB.taxon	distribution	Distribution La Réunion Island at 58 – 70 m deep, Mozambique Channel at 35 – 150 m deep. The present material was collected at a depth of 47 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD610ED7AFE8BFDB0BC52.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 2 ♀♀ (8.0 – 9.8 mm); SAYA stn CP 5412; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 7 Nov. 2022; MNHN-IU- 2021 - 5774, MNHN-IU- 2021 - 5775.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD610ED7AFE8BFDB0BC52.taxon	distribution	Distribution Widely distributed at numerous localities of the western and eastern Atlantic, Indian Ocean, and western and eastern Pacific, from low to high latitudes between 1600 and 3294 m deep. The present material was collected at 1396 – 1441 m deep.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD610ED21FD10FD1FBDC6.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♂ (11.5 mm); SAYA stn CP 5412; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 7 Nov. 2022; MNHN-IU- 2022 - 209.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD610ED21FD10FD1FBDC6.taxon	distribution	Distribution Indian Ocean, along East African coast, Indonesia, western Pacific from South China Sea and Japan to Queensland and Solomon Islands, between 277 and 1644 m deep (Baba et al. 2009). The present material was collected at depths of 1396 – 1441 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD610ED62FBE3FDE9BBFA.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♂ (11.6 mm); SAYA stn CP 5412; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 7 Nov. 2022; MNHN- IU- 2021 - 5784.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD610ED62FBE3FDE9BBFA.taxon	distribution	Distribution Previously known from South Africa, Taiwan and southwestern Pacific, from southeastern Australia to Solomon Islands, and Wallis and Futuna, between 296 and 1313 m deep. The present material was collected at depths of 1396 – 1441 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD611ED30FA68FDC8BF1A.taxon	materials_examined	Material examined SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ov. ♀ (9.0 mm); SAYA stn CP 5412; 09 ° 45 ′ S, 60 ° 48 ′ E; 1396 – 1441 m depth; 7 Nov. 2022; MNHN-IU- 2021 - 5785.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12AD611ED30FA68FDC8BF1A.taxon	distribution	Distribution Known from the Indian Ocean, from Madagascar to Sri Lanka and Indonesia, and the western Pacific, from Taiwan and Philippines to New Caledonia and Vanuatu, between 400 and 2217 m deep (e. g., Macpherson et al. 2023, and references cited therein). The specimen of the Saya de Malha Bank was collected at depths of 1396 – 1441 m. Description of the new species	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12BD61CED15FE47FD3DBBF1.taxon	description	Figs 1, 2 A, 5 A	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12BD61CED15FE47FD3DBBF1.taxon	etymology	Etymology From the Latin ‘ albus ’, ‘ white’, in reference to the colour pattern of the species.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12BD61CED15FE47FD3DBBF1.taxon	materials_examined	Material examined Holotype SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • ♂ (1.7 mm); SAYA stn YS 12; 10 ° 37.2 ′ S, 62 ° 02.8 ′ E; 27 m depth; 9 Nov. 2022; MNHN-IU- 2021 - 5806. Paratypes SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 5 ♂♂ (1.5 – 2.3 mm), 7 ov. ♀♀ (1.6 – 2.2 mm), 2 ♀♀ (1.4 – 1.7 mm); SAYA stn YS 12; 10 ° 37.2 ′ S, 62 ° 02.8 ′ E; 27 m; 9 Nov. 2022; MNHN- IU- 2022 - 796 • 2 ov. ♀♀ (2.3 – 2.6 mm); SAYA stn YS 14; 10 ° 12.1 ′ S, 62 ° 09.1 ′ E; 24 m depth; 10 Nov. 2022; MNHN-IU- 2022 - 206, MNHN-IU- 2022 - 834. Non-type material SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 3 ♂♂ (1.2 – 1.7 mm), 1 ov. ♀ (1.7 mm), 3 ♀♀ (1.2 – 1.4 mm); SAYA stn YR 05; 10 ° 37.2 ′ S, 60 ° 10.3 ′ E; 39 m depth; 6 Nov. 2022; MNHN- IU- 2021 - 5811, MNHN-IU- 2022 - 753 • 2 ♂♂ (1.4 – 1.6 mm); SAYA stn YS 01; 09 ° 55.5 ′ S, 60 ° 54.2 ′ E; 25 m depth; 7 Nov. 2022; MNHN-IU- 2022 - 766 • 1 ♂ (1.6 mm); SAYA stn YR 16; 10 ° 12.1 ′ S, 62 ° 09.1 ′ E; 24 m depth; 10 Nov. 2022; MNHN-IU- 2021 - 5808 • 1 ov. ♀ (2.2 mm); SAYA stn YB 03; 10 ° 12.1 ′ S, 62 ° 09.1 ′ E; 27 m depth; 11 Nov. 2022; MNHN-IU- 2022 - 812 • 4 ♀♀ (1.3 – 1.7 mm); SAYA stn YR 26; 16 ° 23.1 ′ S, 59 ° 38.5 ′ E; 16 m depth; 19 Nov. 2022; MNHN-IU- 2021 - 5809 • 1 ♂ (1.3 mm); SAYA stn YR 28; 16 ° 50 ′ S, 59 ° 31.3 ′ E; 17 m depth; 20 Nov. 2022; MNHN-IU- 2021 - 5820 • 1 ov. ♀ (2.8 mm); SAYA stn YR 31; 16 ° 36.1 ′ S, 59 ° 30.4 ′ E; 30 m depth; 21 Nov. 2022; MNHN-IU- 2021 - 5810.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12BD61CED15FE47FD3DBBF1.taxon	description	Description CARAPACE. 0.8 times as broad as long; cervical groove shallowly distinct; ridges each with dense short plumose setae and a few long thick and plumose setae; one medially interrupted epigastric ridge; anterior gastric area slightly convex; two protogastric ridges, anterior ridge medially and laterally interrupted, posterior ridge short, arcuate, prominent, with thick plumose setae; one mesogastric ridge, usually medially interrupted, not extending to anteriormost marginal branchial spines; one uninterrupted metagastric ridge not extending to anterior branchial ridges. Anterior branchial region with several short ridges. Mid-transverse ridge uninterrupted, followed by four uninterrupted transverse ridges (including posterior ridge). Lateral margins slightly convex medially, with six spines: one anterolateral spine and five spines on branchial margin; first spine anterolateral, well developed, anterior to level of orbit, located near outer orbital spine; two spines on anterior branchial margin, and three spines on posterior branchial margin. Strong outer orbital spine. Rostrum spatulate, horizontal, 1.2 – 1.3 times as long as wide, length 0.6 and breadth 0.4 that of carapace; dorsal surface nearly horizontal or slightly concave in lateral view; lateral margin with four incised sharp teeth, basal pair of spines smaller than others; margin between distal two spines, and antepenultimate and penultimate spines slightly convex. PTERYGOSTOMIAN FLAP. One distinct spine on upper margin near linea anomurica, with sparse short setae; anterior margin acute. THORACIC STERNUM. Nearly as long as broad; lateral extremities gently divergent posteriorly. Sternite 3 broadly triangular, 1.3 – 1.4 times as long as wide. PLEON. Tergites 2 – 4 each with uninterrupted transverse stria behind anterior ridge; tergites 5 and 6 smooth, posteromedian margin of tergite 6 straight. Ridges each with dense short simple setae. EYES. Ocular peduncles as long as broad, maximal corneal diameter 0.6 of rostrum width. ANTENNULE. Article 1 with two well-developed and subequal distodorsal and distolateral spines, distodorsal slightly longer; distomesial spine small. ANTENNA. Article 1 with strong distomesial spine reaching end of peduncle. MXP 3. Ischium with minute spine on flexor distal margin; crista dentata with 9 or 10 denticles. Merus as long as ischium; flexor margin with one broad blunt spine; extensor margin with one distal spine. Carpus unarmed. P 1. Each article with both numerous plumose and simple setae. In males 2.5 – 2.8 and in females 1.6 – 1.8 times carapace length. Merus 0.8 – 1.1 length of carapace, 1.5 – 2.1 times as long as carpus, with some strong dorsal and dorsomesial spines and a few ventromesial spines. Carpus 0.8 – 1.0 length of palm, 1.3 – 1.7 times as long as broad; dorsal surface with some small spines; mesial row with two or three strong spines. Palm 1.3 – 1.5 times as long as broad, with a few spines along lateral, dorsal and mesial margins. Fingers unarmed except for opposed margins, 0.8 – 1.0 times as long as palm. P 2 – 4. Moderately short, each article with numerous plumose and simple setae. P 2 1.7 times carapace length. Meri successively shorter posteriorly (P 3 merus 0.9 length of P 2 merus, P 4 merus 0.8 length of P 3 merus); P 2 merus 0.6 carapace length, 2.8 times as long as broad, 1.2 times length of P 2 propodus; P 3 merus 3.0 times as long as broad, 1.2 times length of P 3 propodus; P 4 merus 2.6 times as long as broad, 1.4 length of P 4 propodus. Extensor margins of meri with row of 4 to 6 proximally diminishing spines on P 2 – 3, 0 – 1 spine on P 4; flexor margins distally ending in small spine followed proximally by several eminences; lateral surface unarmed, with scatered scale-like ridges. Carpi with distal spine on extensor margin, unarmed on P 4. P 2 – 4 propodi 3.0 – 3.8 times as long as broad; extensor margin unarmed; flexor margin with 4 – 6 slender movable spines. P 2 – 4 dactyli distally ending in well-curved strong spine, length 0.7 – 0.9 that of propodi; flexor margin with 4 proximally diminishing teeth. COLOUR. Base colour of carapace, pleon and P 1 – 4 white. P 1 – 4 with some black transverse stripes. Genetic data COI (MNHN-IU- 2021 - 5820, GenBank Acc. PV 749085).	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12BD61CED15FE47FD3DBBF1.taxon	discussion	Remarks The new species resembles Coralliogalathea joae from western and eastern Australia, and Papua New Guinea and Vanuatu (Rodríguez-Flores et al. 2018), and C. viridis from Guam (Rodríguez-Flores et al. 2024) in having four teeth on the lateral margin of the rostrum, instead of three, as seen in the rest of the species in the genus. These three species can be easily distinguished by the following differences: – The rostrum is as long as wide or longer than wide in C. joae and C. viridis, whereas it is clearly wider than long in the new species. – The mid-transverse ridge is medially interrupted in C. viridis whereas it is medially uninterrupted in C. joae and the new species. – The anterior gastric area is nearly horizontal in lateral view in the new species (Fig. 2 A), whereas it is clearly convex in lateral view in C. joae (Fig. 2 B). The colour patterns differ in the three species: C. alba sp. nov., base colour of carapace and pleon white, without black spots; P 1 – 4 whitish, with some black transverse stripes. Coralliogalathea viridis, base colour of carapace, pleon and pereopods light green or white, with two symmetrical black round spots behind cervical groove (Rodríguez-Flores et al. 2024). Coralliogalathea joae, base colour of carapace and pleon brownish with darker brown markings, usually with median large white spot on anterior gastric area; P 1 – 4 whitish to brownish with some black transverse stripes (Rodríguez-Flores et al. 2018). – The genetic divergences for the COI gene between C. alba sp. nov. and C. joae and C. viridis are: 9.4 % for C. joae and 20.5 % for C. viridis. See the sequences of C. joae and C. viridis in Rodríguez-Flores et al. (2018, 2024).	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE12BD61CED15FE47FD3DBBF1.taxon	distribution	Distribution Saya de Malha Bank, at depths of 17 – 39 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE126D61BED05F9B4FD18B824.taxon	description	Fig. 3	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE126D61BED05F9B4FD18B824.taxon	etymology	Etymology The species is named after the type locality (Saya de Malha Bank).	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE126D61BED05F9B4FD18B824.taxon	materials_examined	Material examined Holotype SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • ♀ (2.4 mm); SAYA stn CP 5419; 10 ° 16 ′ S, 61 ° 47.4 ′ E; 80 m depth; 10 Nov. 2022; MNHN-IU- 2021 - 5797.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE126D61BED05F9B4FD18B824.taxon	description	Description CARAPACE. Slightly longer than broad; anterior and posterior cervical grooves distinct; dorsal surface with scale-like and interrupted ridges in all regions; mid-transverse ridge interrupted medially and laterally, preceded by posterior cervical groove; transverse groove anterior to row of cardiac spines; ridges not densely setose, with short plumose setae and with some long and thick plumose setae on protogastric and cardiac ridges. Epigastric region with 8 small spines; two submedian protogastric spines, two parahepatic spines, one lateral mesogastric and two median metagastric spines on each side; one anterior branchial spine, one postcervical spine on each side of mid-transverse ridge, one or three branchial dorsal spines on each side near branchial margin; seven small median cardiac spines. Lateral margins slightly convex, with seven spines: 2 spines in front of and 5 strong spines behind anterior cervical groove; first anterolateral, well developed, distinctly posterior to level of lateral limit of orbit; second small, situated at midlength between anterolateral spine and anterior cervical groove, accompanying another spine ventral to between first and second; 2 spines on anterior branchial region, and 3 spines on posterior branchial margin. Outer orbital angle rounded; infra-orbital margin with one spine. Rostrum 1.9 times as long as broad, length and breadth 0.6 and 0.4 that of carapace, respectively; distance between distalmost lateral incisions 0.4 that between proximalmost lateral incisions; dorsal surface nearly horizontal in lateral view, with minute setiferous ridges; lateral margin with four sharp teeth and a minute distal tooth. PTERYGOSTOMIAN FLAP. Rugose with sparse setae, anteriorly rounded; some granules on upper margin near linea anomurica. THORACIC STERNUM. 1.2 times as long as wide. Sternite 3 with median shallow notch on anterior margin. Sternite 4 nearly as wide as following sternites, with anterior margin slightly wider than sternite 3; surface with some short striae. Sternites 4 – 6 wih a few striae. Sternite 3 2.1 times as wide as long; sternite 4 nearly 2.1 times as wide as long, and 3.2 times as wide as sternite 3. PLEON. Tergites 2 – 4 each with 2 or 3 transverse ridges and, with some additional scales, anterior ridge more distinctly elevated than posterior ridges; tergite of somite 5 with medially interrupted ridge; somite 6 with two scale-like ridges, posteromedian margin straight. EYE. Ocular peduncles 1.8 times as long as wide, maximum corneal diameter 0.8 rostrum width. ANTENNULE. Article 1 with 3 distal spines, including 2 well-developed spines laterally, distodorsal spine larger than others, distomesial spine small but distinct; 2 small spines on lateral margin. Ultimate article with a few short setae not in tuft on distodorsal margin. ANTENNA. Article 1 with distomesial spine reaching distal margin of article 2. Article 2 with subequal small distomesial and distolateral spines, not reaching midlength of article 3. Articles 3 and 4 unarmed. MXP 3. Ischium with one spine on extensor and flexor distal margins; crista dentata with 15 – 17 denticles. Merus subequal in length to ischium, with 4 spines on flexor margin, proximal 2 spines larger than remaining spines; extensor margin with small distal spine. Carpus with 3 acute prominences along extensor margin. P 1. 4.5 times carapace length, with scattered long setae and some short setae on spines and scales. Merus 1.7 times carapace length, twice as long as carpus, with rows of mesial, dorsal and lateral spines; distal spines strong, distomesial spine barely reaching proximal fourth of carpus. Carpus 0.8 palm length, 3.6 times as long as broad, with rows of spines along mesial and dorsal surfaces. Palm 4.3 times as long as broad, with rows of mesial, dorsal and lateral spines. Fingers 0.8 lengtht of palm, unarmed except opposed margins. Epipods present. P 2 AND 4 (P 3 lost). Slender, somewhat compressed laterally, sparsely setose with some simple setae and some scattered thick long plumose setae on all articles. Meri shorter posteriorly (P 4 merus 0.6 length of P 2 merus), equally broad; P 2 merus 0.9 carapace length, 5.3 times as long as broad, 1.3 times as long as P 2 propodus; P 4 merus 3.0 times as long as broad, 0.8 length of P 4 propodus. Extensor margins of meri with row of 9 proximally diminishing spines on P 2 and 5 spines on P 4; lateral surface with 2 or 3 small spines; lateroflexor margins each ending in strong terminal spine proximally followed by smaller spines; mesioflexor margin with 4 spines on P 2 and unarmed on P 4. Carpi each with 3 or 4 spines on extensor margin on P 2 and P 4; lateral surface with row of small spines or acute granules paralleling extensor row; distoflexor margins each with small distal spine. Propodi 5.5 – 6.0 times as long as broad; extensor margin with three or four spines on proximal half; flexor margin with five or six movable spines. Dactyli subequal in length, 0.6 length of propodi, each ending in curved, strong, sharp spine; flexor margin with six proximally diminishing teeth, terminal tooth prominent. Epipods absent. SETAE. Three types of setae were observed on carapace, pleon, and pereopods, (1) moderately short plumose setae, with minute setules along both sides of proximal half of each shaft, not dense, located on ridges of carapace and pleon, and scales of P 1 – 4; (2) long thick plumose setae, with setules along one side of each shaft, distally forming a tuft, sparsely located on carapace, around protogastric and cardiac spines, pleon, and P 1 – 4; (3) long thick simple setae, sparsely located on carapace, pleon and pereopods.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE126D61BED05F9B4FD18B824.taxon	discussion	Remarks The new species belongs to the group of species having the carapace with median protogastric and cardiac spines, and the antennular article 1 with a very small distomesial spine. This group contains five species: G. bicornis Macpherson et al., 2025, from New Caledonia, G. echinata Macpherson, 2012, from New Caledonia, G. robusta Baba, 1990, from Madagascar and La Réunion, G. sentosa Macpherson & Robainas-Barcia, 2015, from Wallis and Futuna, and the new species. However, only two species have spines on the metagastric región: G. robusta and the new species. Both species can be distinguished by the following characters: – The metagastric region of the carapace is armed with two median spines in G. robusta, whereas it has four spines in the new species. Furthermore, the branchial region has one – three dorsolateral spines in G. sayaensis sp. nov., whereas these spines are absent in G. robusta. – The corneae are narrower in G. robusta than in the new species. – The thoracic sternite 3 is clearly wider than long in the new species, whereas it is slightly longer than wide in G. robusta.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE126D61BED05F9B4FD18B824.taxon	distribution	Distribution Saya de Malha Bank, at a depth of 80 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE121D607ED07F926FD5FBBE0.taxon	description	Figs 4, 5 B	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE121D607ED07F926FD5FBBE0.taxon	etymology	Etymology The name refers to one of the Children of the Oceans of the Greek mythology (Pluto). The name is a noun in apposition.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE121D607ED07F926FD5FBBE0.taxon	materials_examined	Material examined Holotype SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • ov. ♀ (5.1 mm); SAYA stn DW 5407; 11 ° 00 ′ S, 60 ° 19 ′ E; 193 – 198 m depth; 6 Nov. 2022; MNHN-IU- 2021 - 5805. Paratypes SOUTHWESTERN INDIAN OCEAN – Saya de Malha Bank • 1 ♀ (4.4 mm); same data as for holotype; MNHN-IU- 2022 - 331 • 1 ov. ♀ (4.0 mm); SAYA stn DW 5423; 11 ° 27 ′ S, 62 ° 01 ′ E; 198 – 210 m depth; 12 Nov. 2022; MNHN-IU- 2022 - 852 • 1 ♂ (4.6 mm); SAYA stn DW 5424; 11 ° 28 ′ S, 62 ° 01 ′ E; 150 – 171 m depth; 12 Nov. 2022; MNHN-IU- 2021 - 5756.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE121D607ED07F926FD5FBBE0.taxon	description	Description CARAPACE. Slightly longer than broad. Ridges with dense short plumose setae and scattered thick long iridescent setae. Gastric region with 2 epigastric spines behind rostrum and 4 or 5 spines at each side, longest spines behind supraocular spines. One well-developed parahepatic spine on each side. Cervical groove distinct, with 2 branchial dorsal spines and one postcervical spine on each side. Frontal margins slightly oblique. Lateral margins subparallel and convergent posteriorly. First lateral spine at anterolateral angle, well developed, not reaching level of sinus between rostrum and supraocular spines, one small and one well developed spine between anterolateral spine and anterior branch of cervical groove. Branchial margin with 2 spines, first strongest, followed by 4 smaller spines. Rostrum spiniform, about 0.6 length of remaining carapace, slightly upwards directed, dorsally not carinated. Supraocular spines short, not reaching midlength of rostrum and clearly not reaching end of corneae, subparalell. PTERYGOSTOMIAN FLAP. Unarmed, anteriorly ending in blunt tip. THORACIC STERNUM. As long as wide. Surface of thoracic sternites 4 – 6 smooth, only a few short scales on sternite 4. Sternite 3 four times as wide as long. Sternite 4 anterior margin transverse, nearly contiguous to sternite 3; three times as wide as long, and 2.2 times as wide as sternite 3. Numerous small granules on lateral sides of sternites 6 and 7. PLEON. Tergite 2 with only one pair of lateral spines on each side of anterior margin (holotype and one paratype), and with 1 – 3 additional minute median spines (on two paratypes); tergites 2 – 3 each with one uninterrupted transverse ridge behind anterior ridge, several small scales between both ridges; tergites 4 – 5 each with several scales; posteromedian margin of somite 6 straight. EYES. Ocular peduncles broader than long; corneae dilated, maximum corneal diameter 0.4 distance between bases of anterolateral spines. ANTENNULE. Article 1 (distal spines excluded) 0.3 carapace length, 2.0 times as long as wide (excluding spines), barely overreaching end of cornea, with two subequal or slightly different-sized distal spines with lateral longer; 2 spines on lateral margin, proximal one short, located at midlength of segment, distal spine much longer. ANTENNA. Article 1 with strong distomesial spine reaching end of article 2. Article 2 with distomesial and distolateral subequal spines, reaching or exceeding end of article 3, mesial margin with small spine. Articles 3 and 4 unarmed. MXP 3. Ischium with well-developed spine on flexor distal margin. Merus 0.8 ischium length; flexor margin with two subequal strong spines; extensor margin with small distal spine. P 1. 3.0 (females) – 3.5 (male) times carapace length, with scattered long simple iridescent setae and numerous short plumose setae on spines and scales. Merus as long as or slightly longer than carapace length, 2.1 – 2.5 times as long as carpus, with rows of dorsal and mesial spines; distomesial spine strongest, barely reaching proximal third of carpus. Carpus 0.7 – 0.9 palm length, 1.4 – 1.8 times as long as broad, with rows of spines along mesial, lateral and dorsal surfaces, mesial spines stronger. Palm twice as long as broad, with 3 or 4 rows of dorsal spines; one row of spines along both mesial and lateral margins. Finger 1.4 – 1.5 times palm length; fixed finger with a row of small spines on lateral margin, dactylus with a row of mesial spines, proximalmost spine strongest. P 2 – 4. Moderately slender, with scattered long simple iridescent setae and numerous short plumose setae along extensor margins of all articles. P 2 twice carapace length. Meri shorter posteriorly (P 3 merus 0.8 length of P 2 merus, P 4 merus 0.7 length of P 3 merus); P 2 merus 0.8 carapace length, five times as long as broad, 1.4 – 1.6 times as long as P 2 propodus; P 3 merus 4.5 times as long as broad, 1.3 times as long as P 3 propodus; P 4 merus 3.5 times as long as broad, 1.1 times as long as P 4 propodus. Extensor margins of meri with row of 8 – 12 proximally diminishing spines on P 2 – 3, 0 – 3 small spines on P 4; flexor margins with 3 – 5 spines followed proximally by several eminences on P 2 – 4; lateral surfaces unarmed, with sparsely scaly ridges. Carpi with 4 extensor spines on P 2 – 3, only disto-extensor spine on P 4; lateral surface with several granules sub-paralleling extensor margin; flexor margin with distal spine. Propodi 4.6 – 5.0 times as long as broad; extensor margin with two proximal spines on P 2 – 3, unarmed on P 4; flexor margin with 9 – 11 slender movable spines, one fixed well-developed distal spine. Dactyli slender, length 0.7 – 0.8 that of propodi; flexor margin with 7 – 9 movable spinules along entire border, and ultimate spinule at base of unguis; P 2 dactylus 5.5 times as long as wide. COLOUR. Base colour of carapace and pleon light orange, darker in gastric area and base of rostrum; tip of rostrum whitish; brownish eyes. P 1 – 4 light orange to whitish; P 1 with several transverse orange bands; P 2 – 4 with transverse light orange bands on meri, carpi and propodi, dactyli whitish. Genetic data COI (MNHN-IU- 2022 - 852, GenBank Acc. PV 749084; MNHN-IU- 2021 - 5756, GenBank Acc. PV 749083).	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE121D607ED07F926FD5FBBE0.taxon	discussion	Remarks Trapezionida pluto sp. nov. belongs to the group of species having five branchial spines on the carapace, lateral spines on the second pleomere, granules on sternites 6 and 7, and dorsal spines on the carapace other than epigastric spines. Additionally, the Mxp 3 has a small distal spine on the extensor margin, and P 2 – 4 dactyli have movable spines along the entire length of flexor margin. The new species resembles T. limula (Macpherson & Baba, 1993) from the SW Indian Ocean (Madagascar, MNHN-IU- 2014 - 13483, GenBank Acc. PV 749086) and T. taenia (Macpherson, 1994) from New Caledonia. However, the new species can be distinguished from these species by the following characters: – The thoracic sternum of the new species and T. taenia has numerous granules on the sternites 6 and 7, whereas the granules are only on the sternite 7 in T. limula. Furthermore, the sternum has more scale-like ridges in T. limula and T. taenia than in the new species. – The pleonal tergites 2 and 3 each have only one uninterrupted transverse ridge behind the anterior transverse ridge in the new species, whereas these sternites possess three or four transverse ridges in T. limula and T. taenia. – The distomesial spine of the antennular peduncle article 1 is distinctly longer than the distolateral spine in T. limula and T. taenia, whereas these spines are subequal in the new species. – The distomesial spine of the antennal peduncle article 2 reaches or exceeds the end of article 3 in the new species, whereas it overreaches the distal end of the antennal peduncle in T. limula and T. taenia. – The P 1 has clearly more spines in the new species than in T. taenia. – The new species is genetically very different from the other two species, a COI divergence of 9.3 % from T. limula and> 15 % from T. taenia. See Machordom et al. (2022) for the sequences of T. taenia.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
03EC87CCE121D607ED07F926FD5FBBE0.taxon	distribution	Distribution Saya de Malha Bank, at depths of 150 – 210 m.	en	Macpherson, Enrique, Machordom, Annie (2025): Squat lobsters (Decapoda: Chirostyloidea and Galatheoidea) from Saya de Malha Bank, SW Indian Ocean, with the descriptions of three new species. European Journal of Taxonomy 1012: 27-48, DOI: 10.5852/ejt.2025.1012.3031, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3031/13603
