Lafoea gracillima ( Alder, 1856 )

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 : 29-30

publication ID

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

persistent identifier

https://treatment.plazi.org/id/03C8247E-D01E-FF91-FF62-FAE7FC6C2A30

treatment provided by

Felipe

scientific name

Lafoea gracillima ( Alder, 1856 )
status

 

Lafoea gracillima ( Alder, 1856) View in CoL

Fig. 28

Campanularia gracillima Alder, 1856: 361 , pl. 14, figs. 5, 6.

Lafoea fruticosa View in CoL .— Segerstedt, 1889: 15, 26 [not Campanularia fruticosa M. Sars, 1850 ].

Lafoea gracillima View in CoL .— Jäderholm, 1909: 74, pl. 7, figs. 6, 7.— Rees & Rowe, 1969: 15.— Jägerskiöld, 1971: 63.

Type locality. UK: England, Northumberland coast ( Alder 1856: 361; Cornelius & Garfath 1980: 281).

Museum material. Kosterhavet, 58°53.093’N, 11°05.668’E, 30– 20 m, 09.ix.2010, biological dredge, R / V Nereus , one colony, up to 3.8 cm high, on stems of Tubularia indivisa , without gonophores, ROMIZ B3912.

Remarks. There has been longstanding debate whether Lafoea gracillima ( Alder, 1856) is conspecific with L. fruticosa (M. Sars, 1850) . Cornelius (1975b) reviewed the evidence, concluded that they were identical, and referred both to the synonymy of L. dumosa ( Fleming, 1820) . His concept of the species has been widely adopted in recent major taxonomic accounts of this hydrozoan (e.g. Rees & Vervoort 1987; Cornelius 1995a; Hirohito 1995; Schuchert 2001 a, 2003; Watson 2003; Bouillon et al. 2006; Vervoort 2006).While acknowledging the high degree of variation apparent in these hydroids, and the overlap in morphotypes that may occur, evidence from molecular work is needed to resolve their relationships. Moura et al. (2008) suggested from preliminary molecular analyses that L. dumosa could be a species complex, and Schuchert (2001a) discovered some nematocyst differences in materials assigned to the species. For now, as with Cairns et al. (2002: 56), I prefer to maintain L. gracillima as valid.

Lafoea gracillima , or the typical form corresponding to it, is common in southwestern Scandinavia ( Kramp 1935b; Rees & Rowe 1969; Jägerskiöld 1971; Christiansen 1972). Reported distribution. West coast of Sweden.—Säcken Reef to Gullmarfjord ( Rees & Rowe 1969). Elsewhere.—North Atlantic from Spitzbergen to Madeira ( Christiansen 1972) in the east, and from Greenland and the Canadian Arctic to Nantucket Sound ( Calder 1970, 2004) in the west.

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Lafoeidae

Genus

Lafoea

Loc

Lafoea gracillima ( Alder, 1856 )

Calder, Dale R. 2012
2012
Loc

Lafoea gracillima

Jagerskiold, L. A. 1971: 63
Rees, W. J. & Rowe, M. 1969: 15
Jaderholm, E. 1909: 74
1909
Loc

Lafoea fruticosa

Segerstedt, M. 1889: 15
1889
Loc

Campanularia gracillima

Alder, J. 1856: 361
1856
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