Halopteris catharina ( Johnston, 1833 )

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: 45

publication ID

http://doi.org/ 10.11646/zootaxa.3171.1.1

persistent identifier

http://treatment.plazi.org/id/03C8247E-D02E-FFA0-FF62-FF70FB742F6D

treatment provided by

Felipe

scientific name

Halopteris catharina ( Johnston, 1833 )
status

 

Halopteris catharina ( Johnston, 1833)  

Fig. 44 View FIGURE 44

Plumularia catharina Johnston, 1833: 497   , figs. 61–62.— Jäderholm, 1909: 107, pl. 12, fig. 7.

Plumularia catharinae   .— Segerstedt, 1889: 21, 27 [incorrect subsequent spelling].

Halopteris catharina   .— Rees & Rowe, 1969: 21.

Schizotricha catharina   .— Jägerskiöld, 1971: 64.

Type locality. UK: England, Berwick ; Scotland, Firth of Forth ( Johnston 1833: 497)   .

Museum material. Väderöarna, 58°35.010’N, 11°04.864’E, 121– 50 m, 13.ix.2010, biological dredge, R / V GoogleMaps   Nereus   , on a bivalve, one small colony, 5 mm high, without gonophores, ROMIZ B3929   .

Remarks. Relatively recent taxonomic accounts of Halopteris catharina ( Johnston, 1833)   have been given by authors including Ramil & Vervoort (1992), Cornelius (1995b), and Schuchert (1997). Most records of the species have been from boreal and temperate waters of the eastern north Atlantic, and it appears to be relatively common at moderate depths along the west coast of Sweden (see Checklist). It is also known from Danish waters ( Kramp 1935b, as Schizotricha catharina   ) and from the Oslofjord ( Christiansen 1972, as Antennella catharina   ). The species can be distinguished from known congeners in having hydrocladia that are usually arranged in opposite pairs, and hydrothecae that are flanked by two pairs of lateral nematothecae. Female gonothecae of H. catharina   resemble a flattened cylinder ( Schuchert 1997).

Reports of H. catharina   from pelagic Sargassum   in the western North Atlantic were considered misidentifications of H. diaphana (Heller, 1868)   earlier by me (Calder 1997). In turn, records of H. diaphana   from that region have been referred to H. alternata ( Nutting, 1900)   by Schuchert (1997), who indicated that H. diaphana   appears limited to the Mediterranean Sea and to Brazil.

Reported distribution. West coast of Sweden.—Säcken Reef area to southern Kattegat ( Jägerskiöld 1971).

Elsewhere.—Atlantic Ocean from Trondheim, Norway, and Iceland to Namibia in the east ( Jäderholm 1909; Ramil & Vervoort 1992), and from Georgia, USA, to the Straits of Magellan in the west ( Vervoort 1972).

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

Kingdom

Chromista

Phylum

Ochrophyta

Class

Phaeophyceae

Order

Sphacelariales

Family

Stypocaulaceae

Genus

Halopteris

Loc

Halopteris catharina ( Johnston, 1833 )

Calder, Dale R. 2012
2012
Loc

Schizotricha catharina

Jagerskiold, L. A. 1971: 64
1971
Loc

Halopteris catharina

Rees, W. J. & Rowe, M. 1969: 21
1969
Loc

Plumularia catharinae

Segerstedt, M. 1889: 21
1889
Loc

Plumularia catharina

Jaderholm, E. 1909: 107
Johnston, G. 1833: 497
1833