Meganema claviformis Fraser, 1939b

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: 28

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-FFFD-FFFF-AEC1-5E741D33F98E

treatment provided by

Plazi

scientific name

Meganema claviformis Fraser, 1939b
status

 

Meganema claviformis Fraser, 1939b 

Lafoeina maxima Levinsen, 1893: 182  , pl. 6, figs. 9–12.

Keratosum complexum Hargitt, 1909: 379  , figs. 8–10.

Levinsenia maxima  .— Hadži, 1917: 55.

Eupoma maximum  .— Stechow, 1920: 45.

Meganema claviformis Fraser, 1939b: 60  , figs. 2a–c.

Lafoeina claviformis  .— Fraser, 1947a: 240.

Keratosum maximum  .—Calder, 1991: 10.

Syntypes. BCPM 976-00302-001: Canada, Nunavut, Dolphin and Union Strait, off Cape Bexley , 68°59’N, 115°40’W, 16 m, summer 1936 or 1937, RCMP Vessel St. Roch, dredge, two colony fragments, coll. Sgt. H.A. Larsen; slide.GoogleMaps 

Lectotype, by present designation. RBCM 976-00302-001: Canada, Nunavut, Dolphin and Union Strait, off Cape Bexley , 68°59’N, 115°40’W, 16 m, summer 1936 or 1937, RCMP Vessel St. Roch, dredge, one colony fragment (specimen on the left side of the slide BCPM 976-00302-001), 8 mm high, in only fair condition, without gonophores, coll. Sgt. H.A. Larsen; slide.GoogleMaps 

Paralectotype. BCPM 976-00302-001: Canada, Nunavut, Dolphin and Union Strait, off Cape Bexley , 68°59’N, 115°40’W, 16 m, summer 1936 or 1937, RCMP Vessel St. Roch, dredge, one colony fragment, 8 mm high, in only fair condition, without gonophores, coll. Sgt. H.A. Larsen; slide.GoogleMaps 

Type locality. Canada, Nunavut: Dolphin and Union Strait, off Cape Bexley , 68°59’N, 115°40’W, 16 m ( Fraser 1939b).GoogleMaps 

Current status. Invalid.

Remarks. In describing Meganema claviformis, Fraser (1939b)  reported that the hydroid was “attached to sponges, barnacle shells, etc.” No name-bearing type was designated by him. The only type material of the species in existence is mounted on a slide ( BCPMAbout BCPM 976-00302-001) in the Fraser Hydroid Collection at the RBCMAbout RBCM. Two specimens occur on the slide, both of them fragmentary. While the fragments may be part of a single colony, we have not assumed so for nomenclatural purposes ( ICZN Recommendation 73F). The specimen on the left side of the slide has been designated here as the lectotype ( RBCMAbout RBCM 976-00302-002) to objectively define the species and ensure stability of nomenclature. The specimen on the right is the paralectotype.

Fraser (1947a) abandoned Meganema Fraser, 1939b  as valid, acknowledging that M. claviformis  was referable to the same genus as Lafoeina maxima Levinsen, 1893  . He nevertheless persisted in recognizing Lafoeina claviformis  as a distinct species. The two were later regarded as synonyms ( Calder 1970, 1991). The species is listed in Cairns et al. (2002) as Keratosum maximum  and in WoRMS as Lafoeina maxima  . The former is maintained here for reasons given above in Remarks on the genus Meganema  .

BCPM

British Columbia Provincial Museum

RBCM

Royal British Columbia Museum

Kingdom

Animalia

Phylum

Cnidaria

Class

Cnidaria (awaiting allocation)

Order

Cnidaria (awaiting allocation)

Family

Cnidaria (awaiting allocation)

Genus

Meganema

Loc

Meganema claviformis Fraser, 1939b

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

2018
Loc

Lafoeina maxima

: 182

Loc

Keratosum complexum

: 379

Loc

Levinsenia maxima

: 55

Loc

Eupoma maximum

: 45

Loc

Meganema claviformis Fraser, 1939b : 60

: 60

Loc

Lafoeina claviformis

: 240