Lictorella crassitheca Fraser 1941
Creators
Description
Lictorella crassitheca Fraser, 1941b
Lictorella crassitheca Fraser, 1941b: 85, pl. 18, figs. 12a, b.
Zygophylax crassitheca.— Rees & Vervoort, 1987: 78.
Holotype. USNM 43456: USA, Maine, 31 m, five fragments and some detached hydrothecae of a single colony, in fair condition, without gonophores, labelled “ type ”; ethanol.
Type locality. USA: Gulf of Maine, 17 fm (31 m) (Fraser 1941b).
Current status. Valid, as Zygophylax crassitheca (Fraser, 1941b).
Remarks. Material designated by Fraser (1941b) as the “ type ” of Lictorella crassitheca at the NMNH (USNM 43456) presently comprises five fragments of what we regard as parts of a single colony. No indication of specimen number was provided in the original description. Rees & Vervoort (1987) referred to the collection as the “ type series,” but the specimen count in the online database of the NMNH is stated to be “1.” Recorded therein as a syntype, the specimen is taken here to be the holotype by monotypy (ICZN Art. 73.1.2). No other type material of the species is known to exist. Minimal collection data accompany the holotype.
In addition to the record from the Gulf of Maine, Fraser (1941b) recorded this species from R/V Albatross Sta. 2430, 42°58’30”N, 50°50’W, SE of Sable Island (Nova Scotia, Canada), 179 fm (327 m), 23 June 1885. In being listed separately from the “ type ”, however, the material is not considered part of the type series (ICZN Art. 72.4.6). That collection, from the upper slope near the southern tip of the Grand Banks of Newfoundland, was not found in the current online database of the NMNH.
In describing Lictorella crassitheca, no gonophores were observed by Fraser (1941b). Nematophores were said to be scarce and restricted to the polysiphonic hydrocaulus (Fraser 1941b, 1944a, b). Now assigned the binomen Zygophylax crassitheca, this species is currently recognized as valid (Rees & Vervoort 1987; Cairns et al. 2002; WoRMS).
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- USNM
- Family
- Lafoeidae
- Genus
- Lictorella
- Kingdom
- Animalia
- Material sample ID
- USNM 43456
- Order
- Leptothecata
- Phylum
- Cnidaria
- Scientific name authorship
- Fraser
- Species
- crassitheca
- Taxon rank
- species
- Type status
- holotype
- Taxonomic concept label
- Lictorella crassitheca Fraser, 1941 sec. Calder & Choong, 2018
References
- Fraser, C. M. (1941 b) New species of hydroids, mostly from the Αtlantic Ocean, in the United States National Museum. Proceedings of the United States National Museum, 91, 77 - 89. [14 November 1941: noted in Contents page of the journal] https: // doi. org / 10.5479 / si. 00963801.91 - 3125.77
- Rees, W. J. & Vervoort, W. (1987) Hydroids from the John Murray Expedition to the Indian Ocean, with revisory notes on Hydrodendron, Abietinella, Cryptolaria and Zygophylax (Cnidaria, Hydrozoa). Zoologische Verhandelingen, 237, 1 - 209.
- Fraser, C. M. (1944 a) Hydroids of the Atlantic coast of North America. University of Toronto Press, Toronto, 451 pp. [published no later than 19 July 1944: W. J. Dunlop (University of Toronto Press) to S. J. Cook (National Research Council, Canada), letter dated June 8, 1944, " We have almost finished our work on Hydroids of the Αtlantic coast. The sheets are in the bindery and we should begin shipping before long. " - C. M. Fraser to W. J. Dunlop, letter dated July 19, 1944, " The six copies of ' Hydroids of the Αtlantic coast of North Αmerica' arrived safely. " Both letters in University of Toronto Αrchives and Records Management Services, University of Toronto Press Fonds, B 1998 - 0025, Box 5]
- Fraser, C. M. (1944 b) Nematophores in Αmerican hydroids. Transactions of the Royal Society of Canada, Series 3, Section 5, 38, 33 - 49. [read 31 May 1944; 1944]
- 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.