Sea spiders (Arthropoda: Pycnogonida) collected during the Madibenthos Expedition from Martinique shallow waters Author Sabroux, Romain F48B4ABE-06BD-41B1-B856-A12BE97F9653 Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle CNRS, Sorbonne Université, EPHE, UA. 57 rue Cuvier, CP 51, 75005 Paris, France. pycnogonides@gmail.com Author Hassanin, Alexandre 6CAA213C-384A-4111-8F70-1E8E07D3347D Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle CNRS, Sorbonne Université, EPHE, UA. 57 rue Cuvier, CP 51, 75005 Paris, France. alexandre.hassanin@mnhn.fr Author Corbari, Laure 9E5EBA7B-C2F2-4F30-9FD5-1A0E49924F13 Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle CNRS, Sorbonne Université, EPHE, UA. 57 rue Cuvier, CP 51, 75005 Paris, France. corbari@mnhn.fr text European Journal of Taxonomy 2022 2022-12-12 851 1 1 141 http://dx.doi.org/10.5852/ejt.2022.851.1999 journal article 221137 10.5852/ejt.2022.851.1999 c70e23de-1f95-46fb-899b-9754b6145d52 2118-9773 7428095 7317EA8C-7C05-4E24-A38C-30F860013694 Ammothella marcusi Hedgpeth, 1948 Ammothella marcusi Hedgpeth, 1948: 247 . Ammothella marcusi – Hedgpeth 1954: 427 . — Stock 1975a: 975 , fig. 7a–b; 1986: tab. 1. — Child 1979: 9–11 ; 1982a: 358 . — Müller 1990a: 278 . — Müller & Krapp 2009: 11–12 , 21 (key), 31–33, 137 (list), tab. 1, figs 12–13. — Sabroux et al. 2019b : tab. 1. — León-Espinosa et al. 2021: 160 , tab. 1. — Ramírez-Tello et al. 2022 : tab. 1. Type material Holotype : USNM 81099 (not examined). Type locality: Logger-head Key , Tortugas , southwest Florida. Material examined MARTINIQUE • 1 ♂ ; Presqu’Île de la Caravelle ; 14°46.5ʹ N , 60°51,5’W ; depth 15 m ; 22 Sep. 2016 ; st. AB350; MNHN-IU-2016-1302 . Remarks Only one specimen was collected, from which we did not succeed in amplifying the CO1 barcode sequence due to the poor quality of the DNA extract (probably due to the advanced state of decay of the specimen, which hardly consists of more than an empty cuticle, indicating that it was probably dead upon sampling). This species is generally rare in samplings, though Child (1979) examined a rather rich collection at the Smithsonian Tropical Reseach Institute in Panama . The species was recorded in Martinique by Müller (1990a) in Baie de Tartane, so both records of this species in Martinique are from the region of Presqu’Île de la Caravelle. Distribution Typically Caribbean, with one record on the Pacific shore of Mexico ( Oaxaca ). Depth range 0– 5 m . We extend this depth range to 15 m .