Tamarisca tamarisca ( Linnaeus, 1758 )

Calder, Dale R., 2012, On a collection of hydroids (Cnidaria, Hydrozoa, Hydroidolina) from the west coast of Sweden, with a checklist of species from the region 3171, Zootaxa 3171 (1), pp. 1-77 : 40-41

Tamarisca tamarisca ( Linnaeus, 1758)

Fig. 40

Sertularia tamarisca Linnaeus, 1758: 808 .

Diphasia tamarisca .— Segerstedt, 1889: 17, 26.

Sertularella tamarisca .— Jäderholm, 1909: 97, pl. 11, figs. 4–7.

Diphasia cf. tamarisca .— Gislén, 1930: 324.

Sertomma tamarisca .— Jägerskiöld, 1971: 64.

Type locality. Ireland: Dalkey Island ( Cornelius 1979: 305) .

Museum material. Kosterhavet, 58°53.367’N, 11°04.240’E, 90 m, 15.ix.2010, biological dredge, R / V Nereus , one colony, 6.7 cm high, without gonothecae, ROMIZ B3933 .

Remarks. Tamarisca tamarisca ( Linnaeus, 1758) is a large and distinctive hydroid with a relatively uncomplicated taxonomic history. The most troublesome nomenclatural question in the past was its generic assignment, but for the past half-century it has been referred to Tamarisca Kudelin, 1914 . Originally founded as a subgenus of Sertularella Gray, 1848 , Tamarisca was raised to generic rank by Naumov (1960) and has been recognized as such in subsequent works. Sertomma Stechow, 1919b is considered a synonym ( Cornelius 1979). Details on its taxonomy are given by Cornelius (1979; 1995b).

FIGURE 41. Thuiaria articulata : part of branch with alternate and deeply immersed hydrothecae, ROMIZ B3902. Scale equals 0.5 mm.

This species has been reported several times at locations in western Sweden (see Checklist). It was not found in the Oslofjord by Christiansen (1972), but Kramp (1935b) included records of T. tamarisca from the Skagerrak off Hanstholm and Hirtshals, Denmark, at depths of 57 and 225 m.

The centre of distribution of Tamarisca tamarisca is the eastern North Atlantic ; records of it in the western North Atlantic are few (see Fraser 1944). The only specimen recorded in the catalog of the National Museum of Natural History , Smithsonian Institution ( USNM 29443 ), is from Plymouth Sound , UK. No records of it were found in online searches of collections at the Museum of Comparative Zoology , Harvard University , and the Peabody Museum of Natural History, Yale University .

Reported distribution. West coast of Sweden.—Koster area to Gullmarfjord ( Jäderholm 1909).

Elsewhere. North Atlantic from the Barents and White seas to the Bay of Biscay ( Naumov 1960; Cornelius 1995b; Altuna 2007) in the east, and from west Greenland to Massachusetts Bay in the west ( Fraser 1944, as Diphasia tamarisca ; Schuchert 2001).

Figures

FIGURE 40. Tamarisca tamarisca: part of branch with two pairs of opposite hydrothecae, ROMIZ B3933. Scale equals 1.0 mm.