Euryalida (Echinodermata, Ophiuroidea) from Northwest Africa Author Calero, Belén 687E6EF1-9972-4FBD-8751-4138E80206C7 Vigo - Centro de Investigación Mariña, Facultade de Ciencias do Mar, Universidade de Vigo, E- 36310 Vigo, Spain. & Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, E- 36310 Vigo, Spain. bcalero@uvigo.es Author Ramil, Fran 67BAF0B6-E4D5-4A2D-8C03-D2D40D522196 Vigo - Centro de Investigación Mariña, Facultade de Ciencias do Mar, Universidade de Vigo, E- 36310 Vigo, Spain. framil@uvigo.es text European Journal of Taxonomy 2023 2023-05-12 870 46 75 http://dx.doi.org/10.5852/ejt.2023.870.2117 journal article 58364 10.5852/ejt.2023.870.2117 37f0c764-99c1-45f4-8836-86741dcabd2b 2118-9773 7938618 3FDD6064-3107-4540-B587-9D02C01DF5B8 Gorgocephalus pustulatum (H.L. Clark, 1916 ) Figs 10–11 Astrodendrum pustulatum Clark, 1916: 84–85 , pl. XXXIV figs 1–2. Gorgonocephalus pustulatum Baker, 1980: 54–56 , figs 18B, 20, 30. Gorgonocephalus pectinatus Mortensen, 1933: 281–285 , figs. 16–17, pl. XVIII figs. 1–2. Gorgonocephalus pustulatum – Rowe & Gates 1995: 368 . — Calero et al. 2018: 3 , 8. Gorgonocephalus pectinatus – Clark & Courtman-Stock 1976: 133 . Material examined GUINEA BISSAU • 1 spec. , 30.45 mm dd; 10°01′18″– 10°00′24″ N , 17°24′56″– 17°25′05″ W ; depth 902–908 m ; 24 Oct. 2008 ; Bissau-0810 exped.; stn BS166; Bissau-0810-18012 ; LZM-UV . Distribution This species has an Indo-Pacific distribution. It has been recorded in South Africa from Cape Province to East London ( Mortensen 1933 ), the Indonesian region ( Döderlein 1927 ) and Flinders Islands (Bass Strait, Australia ) ( Clark 1916 ); its bathymetric range extends from 182 ( Clark 1916 ) to 860 m ( Clark & Courtman-Stock 1976 ). Our material was recorded in one station in Guinea-Bissau waters, between 902 and 908 m . This material is the same as that reported by Calero et al. (2018) . Description The dorsal side of disc covered by a skin with some scattered tubercles, ending in some small thorns. The same type of tubercles were found on the marginal belt of plates. Radial shields long and bar-shaped, nearly reaching the centre of the disc ( Fig. 11A ). They are almost completely covered by tubercles similar to those from the interradial areas but slightly bigger ( Fig. 11C ). The ventral interradial areas are almost fully covered by small granules. Plates of the oral frame swollen and obscured by a thick skin. Oral shields with some scattered small granules. There is a cluster of slender apical papillae flanked on each side by smaller oral papillae. Arms also covered by a skin concealing the plates. First pair of tentacle pores outside the mouth edge, without arm spines. Two arm spines from the second to fifth or sixth pores; afterwards, from the first fork on, three spines. Arm spines are small, less than one arm segment, and with some thorny ends. First fork within the edge of the disc. Dorsally, arms covered by flat granules, and with a longitudinal median furrow ( Fig. 11F ). Pedicellarial bands along the arms, appearing from the first segments. Remarks Even though the single specimen collected was badly damaged, the presence of the main distinctive features of Gorgonocephalus pustulatum (H.L. Clark, 1916 ) , like the number of spines (max. 4), disc coverage (sparse and low tubercles) or the thin peripheral ring, legitimate our identification to species level. Our finding in Guinea-Bissau represents the first record of G. pustulatum in the Tropical East Atlantic Ocean, extending its geographical distribution to the north, from south Africa to Guinea-Bissau . This station also represents the deepest record for this species ( 908 m ).