Sertularia subtilis Fraser, 1937b

Calder, Dale R. & Choong, Henry H. C., 2018, Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions, Zootaxa 4487 (1), pp. 1-83: 46

publication ID

https://doi.org/10.11646/zootaxa.4487.1.1

publication LSID

lsid:zoobank.org:pub:524B23B9-8EAA-4BD6-8937-A1B8F1C057B9

persistent identifier

http://treatment.plazi.org/id/0392282A-FFCB-FFC9-AEC1-5D381C44F9D2

treatment provided by

Plazi

scientific name

Sertularia subtilis Fraser, 1937b
status

 

Sertularia subtilis Fraser, 1937b 

Sertularia rugosissima Thornely, 1904: 118  , pl. 2, fig. 4.

Sertularia hupferi Broch, 1914: 34  , figs. 9a–c.

Tridentata rugosissima Stechow, 1923: 205  .

Sertularia subtilis Fraser, 1937b: 3  , pl. 1, fig. 4.

Geminella subtilis  .— Vannucci Mendes, 1946: 572, pl. 4, figs. 42, 43.

Holotype. USNM 43288View Materials: Puerto Rico, off NE coast, Johnson-Smithsonian Deep-Sea Expedition Sta. 68, 18°23’35”N, 65°37’10”W, 24 February 1933, 18 m, R/ V Caroline, one colony, 3 mm high, in fairly good condition, without gonothecae, collGoogleMaps  . Paul Bartsch, labelled “ type ” and “ holotype ”; ethanol. 

Schizoholotype. BCPM 976-00681-001: Puerto Rico, two colony fragments (distal part of hydrocaulus with four pairs of hydrothecae, 1.9 mm high; basal part of hydrocaulus and stolon, 2.8 mm high), in good condition, without gonothecae; slide. 

Type locality. Puerto Rico: northeast coast, 18°23’35”N, 65°37’10”W, 10 fm (18 m) ( Bartsch 1933; Fraser 1937b).

Current status. Invalid.

Remarks. Sertularia subtilis  was described from a single, sterile, 3-mm-high colony collected during the Johnson-Smithsonian Deep-Sea Expedition to Puerto Rico and vicinity ( Fraser 1937b). The small specimen at the NMNHAbout NMNH ( USNMAbout USNM 43288), designated by Fraser as the holotype, is currently listed as a syntype in the online database of that museum. Material on a slide in the Fraser Hydroid Collection at the RBCMAbout RBCM ( BCPMAbout BCPM 976-00681-001), from Puerto Rico, is regarded here as a fragment of the holotype (schizoholotype), because no other records of this species were known to Fraser (1944a, 1947a). No expedition station number is currently recorded under S. subtilis  in either the NMNHAbout NMNH or the RBCMAbout RBCM databases, or in the records of Fraser (1937b) and Arai (1977), but the coordinates and depth of collection given by Fraser correspond with Station 68 in Bartsch (1933). A label confirming that station number exists in the vial containing the holotype. A colony of Tridentata turbinata ( Lamouroux, 1816)  , a much larger species of hydroid, occurs in close proximity to the holotype of S. subtilis  .

This species has been assigned in WoRMS, and in several papers on hydroids of the warm western Atlantic (e.g., Migotto 1996; Galea 2008), to the synonymy of Sertularia rugosissima Thornely, 1904  . Inclusion of that species in Sertularia Linnaeus, 1758  is patently incorrect in differing greatly from Sertularia argentea  , type species of the genus. It is referred here to Tridentata Stechow, 1920  , as T. rugosissima  , based on the known morphology of its trophosome and gonotheca. Also considered a synonym of T. rugosissima  is Sertularia hupferi Broch, 1914  .

NMNH

Smithsonian Institution, National Museum of Natural History

USNM

Smithsonian Institution, National Museum of Natural History

RBCM

Royal British Columbia Museum

BCPM

British Columbia Provincial Museum

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Sertulariidae

Genus

Sertularia

Loc

Sertularia subtilis Fraser, 1937b

Calder, Dale R. & Choong, Henry H. C. 2018

2018
Loc

Sertularia rugosissima

: 118

Loc

Sertularia hupferi

: 34

Loc

Tridentata rugosissima

: 205

Loc

Sertularia subtilis

: 3

Loc

subtilis

: 572