Spergo
{{Short description|Genus of gastropods}}
{{Automatic taxobox
|image = Spergo fusiformis 001.jpg
|image_caption = Shell of Spergo fusiformis
|display_parents = 3
|taxon = Spergo
|authority = Dall, 1895
|synonyms =
- Mangilia (Spergo) Dall, 1895 (original rank)
- Speoides Kuroda & Habe, 1961
- Spergo (Speoides) Kuroda & Habe, 1961
|type_species = Mangilia glandiniformis
|type_species_authority = Dall, 1895
|subdivision_ranks = Species
|subdivision = See text
}}
Spergo is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.{{WRMS species|432558|Spergo Dall, 1895||14 April 2010}}
Description
The large, thin shell is nearly destitute of sculpture. It shows an unrecurved columella, a short, wide, straight siphonal canal, a wide shallow emargination representing the anal notch, and generally feeble anal fasciole, except in the very young. There is a sharp outer lip, unarmed aperture, and a sinusigera protoconch.
The animal has a muzzle formed by a stout squarely truncated rostrum opening into a capacious pharynx, provided internally with a degenerate proboscis not capable of extrusion beyond the oral orifice, with a poison gland and a degenerate radula. Eyes are present and functional. The tentacles are low-seated, stout, and clavate. The operculum is absent. The dentition resembles that of Bela.
This form resembles Pleurotomella, Verrill, from which it differs in the character of the rostrum and pharynx, in the possession of eyes, in its straight wide siphonal canal, and in having a feebler type of verge, anal notch and fasciole.[https://archive.org/details/proceedingsofuni171894unit W.H. Dall, Report on the Mollusca and Brachiopoda dredged in deep water, chiefly near the Hawaiian Islands, with illustrations of hitherto unfigured species from Northwest America; Proceedings of the United States National Museum. vol. 17 (1895)] {{PD-notice}}
Species
Species within the genus Spergo include:
- Spergo aithorrhis Sysoev & Bouchet, 2001{{WRMS species|434890|Spergo aithorrhis Sysoev & Bouchet, 2001||14 April 2010}}
- Spergo annulata Criscione, Hallan, Puillandre & Fedosov, 2021
- Spergo castellum Criscione, Hallan, Puillandre & Fedosov, 2021
- Spergo fusiformis (Habe, 1962){{WRMS species|432877|Spergo fusiforme (Habe, 1962)||14 April 2010}}
- Spergo glandiniformis (Dall, 1895){{WRMS species|434891|Spergo glandiniformis (Dall, 1895)||14 April 2010}}
- Spergo nipponensis Okutani & Iwahori, 1992{{WRMS species|434892|Spergo nipponensis Okutani & Iwahori, 1992||14 April 2010}}
- Spergo parunculis Stahlschmidt, Chino & Fraussen, 2015
- Spergo parvidentata Criscione, Hallan, Puillandre & Fedosov, 2021
- Spergo sibogae Schepman, 1913
- Spergo tenuiconcha Criscione, Hallan, Puillandre & Fedosov, 2021
;Species brought into synonymy:
- Spergo glandiformis (Dall, 1895): synonym of Spergo glandiniformis (Dall, 1895) (misspelling)
References
{{Reflist}}
- Bouchet P. & Rocroi J.-P. (2010). Nomenclator of Molluscan Supraspecific Names.
External links
- [https://web.archive.org/web/20151129211433/http://mollus.oxfordjournals.org/content/77/3/273.full.pdf Bouchet, P.; Kantor, Y. I.; Sysoev, A.; Puillandre, N. (2011). A new operational classification of the Conoidea (Gastropoda). Journal of Molluscan Studies. 77(3): 273-308]
- {{cite journal | last1 = Tucker | first1 = J.K. | year = 2004 | title = Catalog of recent and fossil turrids (Mollusca: Gastropoda) | url = http://www.mapress.com/zootaxa/2004f/z00682f.pdf | format = PDF | journal = Zootaxa | volume = 682 | pages = 1–1295 }}
- [http://www.bagniliggia.it/WMSD/HtmFamily/RAPHITOMIDAELS.htm Worldwide Mollusc Species Data Base: Raphitomidae]
{{Taxonbar|from=Q3722380}}