Tanystylum orbiculare Wilson, 1878

Sabroux, Romain, Hassanin, Alexandre & Corbari, Laure, 2022, Sea spiders (Arthropoda: Pycnogonida) collected during the Madibenthos Expedition from Martinique shallow waters, European Journal of Taxonomy 851 (1), pp. 1-141 : 33-35

Tanystylum orbiculare Wilson, 1878

Tanystylum orbiculare Wilson, 1878: 5–7 , pl. 2 fig. 2a– 2f.

Tanystylum orbiculare – Wilson 1880: 471–473, pl. 3 fig. 11. — Morgan 1891: 47–49 (embryology). — Sumner et al. 1913: 141–142. — Fish 1925: 161. — Marcus 1940: 105–108, pl. 15 fig. 15a–h. — Hedgpeth 1943: 54–55; 1948: 266–268, figs 8, 49a. — Fage 1949: 29–30, fig. 6; 1952: 530. — Sawaya 1950: 73. — Stock 1951: 18–20; 1954a: 117; 1958a: 138; 1958b: 4; 1962: 219; 1966a: 46; 1975a: 985; 1986: tab. 1; 1992a: 121, 139; 1994: 37. — Bourdillon 1955: 599. — Clark 1963 (?): 5, 60; 1977: 332. — Fage & Stock 1966: 319. — Kraeuter 1973: 496. — Krapp 1973: 60, 64, fig. 4; 1983: 409, 412. — Krapp-Schickel & Krapp 1975: 17, tab. 2 (ecology). — Arnaud 1976: 69; 1987: 43–44. — Krapp & Kraeuter 1976: 343 — Munilla & de Haro 1981: 191–197, tab. 1, figs 5, 11; 1984: 531, 533–535, tabs 3–4. — Bremec et al. 1986: 44–45, fig. 23. — Child 1992b: 8 (key), 33–35, tab. 3, fig. 15; 2009: 819 (list). — Krapp & Nieder 1993: tab. 1 (predation). — Munilla 1993: tab. 4. — Genzano 2002: 84, 86, 88, 90–91, tab. 1, figs 2–8, 11. — Bain 2003: 198, 201–205, 215, tabs 2–3, fig. 3. — Gillespie & Bain 2006: 309, 316–317, tab. 1. — Magari et al. 2006: tabs 1–3. — Arango & Wheeler 2007: appendix 1, tab. 3, figs 1–3, 5, 8 (phylogeny). — Fahrenbach & Arango 2007: 917, 919–920. — Krapp et al. 2008: 57 (list), 59, 61. — Gillett & Schaffner 2009: 83. — Bamber 2010: 15 (list), 67 (key), 104, fig. 134. — Masta et al. 2010 (mitogenome): 61–62, tab. 1, fig. 2. — Brenneis et al. 2011a: 321; 2011b: 345, 347; 2017: 7, 9, tab. 1. — Genzano et al. 2011: tab. 2. — Lalana & Varela 2011: 53–54, fig. 1. — Koçak & Alan 2013: 367–369, 371, figs 2–3, 5. — Brenneis & Scholtz 2014: 18. — Bakir et al. 2014: tab. 1. — Munilla & Soler-Membrives 2014: 124 (key), 127–129, fig. 68. — Arango & Linse 2015: tab. 1. — Koçak 2015: 191; 2019: list; 2020: 375. — Sabroux et al. 2017: 15, appendices 1–2, figs 3–5. — Dietz et al. 2018: 5 (feeding). — Lucena & Christoffersen 2018a: 106. — Lucena et al. 2019: 21. — Ramírez-Tello et al. 2022: tab. 1.

Clotenia orbiculare – Bouvier 1923a: 57. — Giltay 1929: 175.

non Tanystylum orbiculare – Stock 1954b: 145 (= Tanystylum conirostre ( Dohrn, 1881))

nec Tanystylum conirostre ( Dohrn, 1881) – Sabroux et al. 2019b: tab. 1, fig. 3.

Type material

Holotype: USNM 37781 (not examined, illustrated in Child 1992b). Type locality: Long Island Sound , off Noank , Fishers Island Sound, New York, USA.

Material examined

MARTINIQUE • 1 ♂ ov.; Baie de Fort-de-France ; 14°36.1ʹ N, 61°04ʹ W; depth 0–1 m; 29 Sep. 2016; st. AM034; MNHN-IU-2016-872/ MK411183 • 1 ♂; same collection data as for preceding; MNHN- IU-2016-873/ MK411184 • 1 ♀; same collection data as for preceding; MNHN-IU-2016-874/ MK411185 .

Remarks

This species was misidentified as Tanystylum conirostre in Sabroux et al. (2019b), as the examined specimens differed from the description of T. orbiculare given by Krapp (1973) by having slenderer legs and a straight abdomen. However, T. orbiculare can be distinguished from T. conirostre by the number of palp articles (5 rather than 4) and the proboscis shape, which is more barrel-shaped in T. orbiculare . Although this species is very common in the Atlantic, it was not yet recorded from Martinique. CO1 p-distances to previously barcoded material ( Arango & Wheeler 2007; Masta et al. 2010; respectively GenBank accession numbers DQ390064 from Mar del Plata, Argentina, and GU370064 from Massachusetts) are high (0.172 and 0.11–0.14, respectively; see Appendix). All specimens were collected at a single station in the Baie de Fort-de-France.

It should be noted that this species is mostly amphi-Atlantic, but two records were provided from New South Wales by Stock (1954b) and Clark (1963). However, Stock regarded T. orbiculare as synonymous to T. conirostre and explicitly stated that he found the material similar to the type material of Clotenia conirostris (= T. conirostre ), so this record should be regarded as T. conirostre . In turn, it is possible that Clark’s material was also erroneously identified as T. orbiculare following Stock.

Distribution

Widely recorded in the Atlantic (New England, Massachusetts, Virginia, South Carolina, Georgia, Brazil, Argentina, Senegal, Congo, Angola, Cap Verde); also found in the Caribbean, Gulf of Mexico, occidental and oriental Mediterranean Sea, as well as the Bosphorus. It was also recorded in New South Wales ( Clark 1963), though this record is questionable considering the otherwise amphi-Atlantic distribution of this species.

Depth range

0.5– 58 m.