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Spergo

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Spergo
Shell of Spergo fusiformis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Raphitomidae
Genus: Spergo
Dall, 1895
Type species
Mangilia glandiniformis
Dall, 1895
Species

See text

Synonyms[1]
  • Mangilia (Spergo) Dall, 1895 (original rank)
  • Speoides Kuroda & Habe, 1961
  • Spergo (Speoides) Kuroda & Habe, 1961

Spergo is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.[1]

Description

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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.[2]

Species

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Species within the genus Spergo include:

Species brought into synonymy
  • Spergo glandiformis (Dall, 1895): synonym of Spergo glandiniformis (Dall, 1895) (misspelling)

References

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  • Bouchet P. & Rocroi J.-P. (2010). Nomenclator of Molluscan Supraspecific Names.
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  • 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
  • Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
  • Worldwide Mollusc Species Data Base: Raphitomidae