Published January 21, 2011 | Version v1
Taxonomic treatment Open

Diastoma melanioides

Description

DIASTOMA MELANIOIDES (REEVE, 1849)

Material examined

Indian Ocean: Australia: WA: Esperance Bay, Taylor St Groyne (USNM 801614).

Description

Marginal fold S-shaped (Fig. 6B), terminating at posterior tip of sorting area; oesophageal aperture at tip of marginal fold recurved segment; sorting area curving, tapering posteriorly to pointed tip; left margin of sorting area with conspicuous bulge; sorting area pad, anterior flap, crescentic pads, and accessory marginal fold lacking; glandular pad rounded, rectangular, extending far posterior to gastric shield, with large flap just behind gastric shield; pad supported by narrow, curving stalk representing reduced crescentic ridge; single digestive gland duct opening at left of glandular pad; accessory pads, caecum, and caecal folds lacking; U-shaped fold present below style sac aperture; typhlosoles unfused.

Remarks

Previously described by Houbrick (1981b: fig. 5G), showing the rectangular glandular pad, and tall, complex sorting leaflets of the sorting area, but incorrectly indicating the presence of two digestive gland ducts at the base of the major typhlosole. Similar to his description of the midgut of Campanile (Houbrick, 1981a, 1989), Houbrick (1981b) interpreted the region of the stomach posterior to the gastric shield as the remnant of the spiral caecum, and referred to the glandular pad as a ‘fold emerging from spiral caecum’.

Notes

Published as part of Strong, Ellen E., 2011, More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda), pp. 585-630 in Zoological Journal of the Linnean Society 162 (3) on pages 595-596, DOI: 10.1111/j.1096-3642.2010.00687.x, http://zenodo.org/record/5440617

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Linked records

Additional details

Biodiversity

Family
Diastomatidae
Genus
Diastoma
Kingdom
Animalia
Order
Lepidoptera
Phylum
Mollusca
Scientific name authorship
REEVE
Species
melanioides
Taxon rank
species
Taxonomic concept label
Diastoma melanioides (REEVE, 1849) sec. Strong, 2011

References

  • Houbrick RS. 1981 b. Anatomy of Diastoma melanioides (Reeve, 1849) with remarks on the systematic postition of the family Diastomatidae (Prosobranchia: Gastropoda). Proceedings of the Biological Society of Washington 94: 598 - 621.
  • Houbrick RS. 1981 a. Anatomy, biology and systematics of Campanile symbolicum with reference to adaptive radiation of the Cerithiacea (Gastropoda: Prosobranchia). Malacologia 21: 263 - 289.
  • Houbrick RS. 1989. Campanile revisited: implications for cerithioidean phylogeny. American Malacological Bulletin 7: 1 - 6.