Corymorpha adventitia Fraser, 1941b

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: 16-17

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-FFE9-FFF4-AEC1-58B9189EFA89

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Plazi

scientific name

Corymorpha adventitia Fraser, 1941b
status

 

Corymorpha adventitia Fraser, 1941b 

Corymorpha adventitia Fraser, 1941b: 79  , pl. 13, figs. 3a, b.

Syntypes. USNMAbout USNM 43452: Panama, Gulf of Panama, Panama Bay, Perico Island, 8°55’N, 79°31’W, 12 March 1891, three colony fragments, with hydranths or fragments of hydranths, labelled “ type ”; ethanol.

Lectotype, by present designation. USNMAbout USNM 43452: Panama, Gulf of Panama, Panama Bay, Perico Island, 8°55’N, 79°31’W, 12 March 1891, one colony fragment with a hydranth, in only fair condition, with gonophores, labelled “ type ”; ethanol.

Paralectotypes. USNMAbout USNM 1458875: Panama, Gulf of Panama, Panama Bay, Perico Island, 8°55’N, 79°31’W, 12 March 1891, two colony fragments with hydranths or fragments of hydranths, in only fair condition, with gonophores; ethanol.

Type locality. Panama: Gulf of Panama, off Perico Island, 8°55’N, 79°31’W (see Remarks section below).

Current status. Valid.

Remarks. Fraser (1941b) indicated examining more than one specimen (“Zooids 20 mm.…”) in describing Corymorpha adventitia  , and his “ type ” of the species at the NMNHAbout NMNH ( USNMAbout USNM 43452) indeed comprises fragments of what appear to be at least two polyps (syntypes). The best specimen, with a hydrocaulus and a hydranth with gonophores, is designated here as the lectotype ( USNMAbout USNM 43452). The other fragments have been isolated and assigned paralectotype status ( USNMAbout USNM 1458875). The paralectotype polyp appears to match the hydroid illustrated by Fraser (1941b, pl. 13, figs. 3a, b) in describing the species, but it is not in as good condition now as the lectotype. No specimens of the species are reported in collections at the AMNHAbout AMNH, CASAbout CAS, MCZAbout MCZ, RBCMAbout RBCM, or YPMAbout YPM.

Two different collection localities have been given for Corymorpha adventitia  . According to Fraser (1941b), the hydroid was present in a vial labelled “U.S.F.C. Str. Albatross, Panama, Mar. 12, 1891 ” but no station was listed on that day from the cruise. Fraser thereupon recorded as its locality the last haul made the previous day (off Darién, 7°33' N, 78°34'20" W, 155 m)GoogleMaps  . A different locality in the Gulf of Panama ( Perico Island , near Panama City), recorded in the NMNHAbout NMNH database as Albatross Station 234, is taken here to be correct. Labels with the holotype specimen mark 12 March 1891 as the date of collection, but one of them confirms that the collection was from Albatross Station 234. 

Vervoort (2009) restated the morphological characters of C. adventitia  , a species he regarded as insufficiently described. It is not currently listed in WoRMS. Examination of type material shows that this hydroid is a species of Ralpharia Watson, 1980  , and it is here assigned the binomen R. adventitia  . Its relationship to other known species of the genus needs to be explored. To the north, Ralpharia multitentaculata ( Fraser, 1938a)  is known from the coast of Baja California, Mexico (Calder et al. 2009). Across the Isthmus of Panama, Ralpharia gorgoniae Petersen, 1990  occurs on the Atlantic coast of Panama ( Calder & Kirkendale 2005) and is widely distributed elsewhere in the Caribbean region (e.g., Galea 2013, Galea & Ferry 2015). Representatives of the genus occur essentially worldwide in warm seas.

USNM

Smithsonian Institution, National Museum of Natural History

NMNH

Smithsonian Institution, National Museum of Natural History

AMNH

American Museum of Natural History

CAS

California Academy of Sciences

MCZ

Museum of Comparative Zoology

RBCM

Royal British Columbia Museum

YPM

Peabody Museum of Natural History

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Anthoathecata

Family

Corymorphidae

Genus

Corymorpha

Loc

Corymorpha adventitia Fraser, 1941b

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

2018
Loc

Corymorpha adventitia

Fraser, 1941b : 79