Meganema claviformis , Fraser 1939
Creators
Description
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.
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.
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.
Type locality. Canada, Nunavut: Dolphin and Union Strait, off Cape Bexley, 68°59’N, 115°40’W, 16 m (Fraser 1939b).
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 (BCPM 976-00302-001) in the Fraser Hydroid Collection at the 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 (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.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- RCMP
- Family
- Methylobacteriaceae
- Genus
- Meganema
- Kingdom
- Animalia
- Material sample ID
- BCPM 976-00302-001 , RBCM 976-00302-001, BCPM 976-00302-001
- Order
- Rhizobiales
- Phylum
- Cnidaria
- Scientific name authorship
- , Fraser
- Species
- claviformis
- Taxon rank
- species
- Type status
- holotype , lectotype , paralectotype , syntype
- Taxonomic concept label
- Meganema claviformis , 1939 sec. Calder & Choong, 2018
References
- Fraser, C. M. (1939 b) Hydroids of the western Canadian Αrctic region, 1935 - 1937. Canadian Journal of Research, Section D, Zoological Sciences, 17 (3), 59 - 61. [March 1939: noted on the journal] https: // doi. org / 10.1139 / cjr 39 d- 008
- Levinsen, G. M. R. (1893) Meduser, ctenophorer og hydroider fra Gronlands vestkyst, tilligemed bemaerkninger om hydroidernes systematik. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening i KjObenhavn, Series 5, 4, 143 - 220.
- Hargitt, C. W. (1909) New and little known hydroids of Woods Hole. Biological Bulletin, 17, 369 - 385. https: // doi. org / 10.2307 / 1535941
- Hadzi, J. (1917) Rezultati bioloskih istrazivanja Jadranskoga mora. Hidroidi II. - Ergebnisse biologischer Erforschungen des adriatischen Meeres. Hydroiden II. Halocoryne epizoica g. n., sp. n.; Lafoeina vilae-velebiti sp. n. Prirodoslovna Istrazivanja Hrvatske i Slavonije Potaknuta Matematicko-Prirodoslovnim Razredom Jugoslovenske Akademije Znanosti i Umjetnosti, 11, 27 - 56.
- Stechow, E. (1920) Neue Ergebnisse auf dem Gebiete der Hydroidenforschung. Sitzungsberichte der Gesellschaft fur Morphologie und Physiologie in Munchen, 31, 9 - 45.
- Fraser, C. M. (1947 a) Distribution and relationship in American hydroids. University of Toronto Press, Toronto, 464 pp. [dated 1946 on title page of book, but not published until about 25 February 1947: W. J. Dunlop (University of Toronto Press) to J. Turnbull (University of Toronto Press), letter dated February 13, 1947, " Mr. Ross will complete the binding of the above book (Distribution and relationship in American hydroids) sometime Monday or Tuesday. " - S. J. Cook (National Research Council, Canada) to W. J. Dunlop, letter dated February 25, 1947, " We have received 500 copies of Dr. C. McLean Fraser's book on " Distribution and relationship in Αmerican hydroids. " Both letters in University of Toronto Αrchives and Records Management Services, University of Toronto Press Fonds, B 1998 - 0025, Box 5]
- Calder, D. R. (1970) Thecate hydroids from the shelf waters of northern Canada. Journal of the Fisheries Research Board of Canada, 27, 1501 - 1547. https: // doi. org / 10.1139 / f 70 - 175
- Cairns, S. D., Calder, D. R., Brinckmann-Voss, Α., Castro, C. B., Fautin, D. G., Pugh, P. R., Mills, C. E., Jaap, W. C., Αrai, M. N., Haddock, S. H. D. & Opresko, D. M. (2002) Common and scientific names of aquatic invertebrates from the United States and Canada: Cnidaria and Ctenophora. Second Edition. American Fisheries Society Special Publication, 28, 1 - 115.