Spergo

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Genus of gastropods

title: "Spergo" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["spergo", "raphitomidae", "gastropod-genera"] description: "Genus of gastropods" topic_path: "general/spergo" source: "https://en.wikipedia.org/wiki/Spergo" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Genus of gastropods ::

|image = Spergo fusiformis 001.jpg |image_caption = Shell of Spergo fusiformis |display_parents = 3 |taxon = Spergo |authority = Dall, 1895 |synonyms_ref = |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.

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.

Species

Species within the genus Spergo include:

References

  • Bouchet P. & Rocroi J.-P. (2010). Nomenclator of Molluscan Supraspecific Names.

References

  1. {{WRMS species. 432558. ''Spergo'' Dall, 1895. 14 April 2010
  2. [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
  3. {{WRMS species. 434890. ''Spergo aithorrhis'' Sysoev & Bouchet, 2001. 14 April 2010
  4. {{WRMS species. 432877. ''Spergo fusiforme'' (Habe, 1962). 14 April 2010
  5. {{WRMS species. 434891. ''Spergo glandiniformis'' (Dall, 1895). 14 April 2010
  6. {{WRMS species. 434892. ''Spergo nipponensis'' Okutani & Iwahori, 1992. 14 April 2010

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spergoraphitomidaegastropod-genera