Hygrosoma petersii

• Main Authors: Filander, Zoleka, Griffiths, Charles
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Echinoidea; Echinothurioida; Echinothuriidae; Hygrosoma; Hygrosoma petersii; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.6022630; http://treatment.plazi.org/id/03FE87F0FFB2FFC9FF57FA9CFC3DF82C

Hygrosoma petersii (A. Agassiz, 1880) Fig. 19 A–C. Phormosoma petersii : A. Agassiz, 1879: 76. Hygrosoma petersi : Clark & Courtman-Stock, 1976: 220. Hygrosoma petersii : Mortensen, 1935: 202 –208. Pls. XIII–XVII. Pl. XVIII, Fig. 2. Pl. XIX, Fig. 2. Pl. LXXVIII, Figs I, 3–5, 24, 25; Schultz, 2011: 1099, Figs 1923–1924. Echinosoma petersii : H.L. Clark, 1925a: 56. Material examined. A9812-079-DT; A22124; A22219; A22248; A22251. Identification. Preserved test collapsed, with circular outline. Large oral tubercles with distinctive areoles, disappearing towards peristome. Pore-pairs in single series. Preserved test purple. Global maximum size. Maximum test diameter 180 mm. Global distribution. Widely distributed in North Atlantic from off South-West Ireland to Azores and Senegal and from off New Jersey, USA to West Indies, also reported from West coast of South Africa; at 200–3200 m depth range (Schultz 2011). Remarks. Clark & Courtman-Stock (1976) have flagged Clark’s (1923 & 1924) East coast record of the species as they point out it “is queried by Mortensen as unlikely to refer to this Atlantic species; at least one locality off Natal is duplicated by the British Museum specimen which proved to be referable to Sperosoma biseriatum ”. Differs from Araeosoma paucispinum in arrangement of pore-pairs, where Hygrosoma petersii has pore-pairs in a single series and A. paucispinum in oblique arcs forming three ventral series. Published as part of Filander, Zoleka & Griffiths, Charles, 2017, Illustrated guide to the echinoid (Echinodermata: Echinoidea) fauna of South Africa, pp. 1-72 in Zootaxa 4296 (1) on page 22, DOI:10.11646/zootaxa.4296.1.1, http://zenodo.org/record/843325