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Taxon profile

species

Sayella abjecta (Hedley, 1909)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Allogastropoda »  family Pyramidellidae »  genus Sayella

Scientific synonyms

Odostomia abjecta Hedley, 1909
Odostomia leopardis Laseron, 1951

Images

Sayella abjecta

Author: Hedley

Taxon in country check-lists*

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Description

Shell small, solid, oblong, imperforate. Colour uniform buff. Whorls four, and a heterostrophe protoconch, last whorl about equal to the remainder. Suture deep. Surface smooth but dull. Aperture ovate, bent in towards the axis, rounded anteriorly. Plication invisible externally. Length 1,65; breadth 0,7 mm.
Several specimens from 5-10 fathoms, off the Hope Islands.
Hedley, C., 1909. Mollusca from the Hope Islands, North Queensland.
Sayella abjecta (Hedley, 1909)

Description: Shell small, wide and short, spire strongly convex, up to 5 whorls. Protoconch infolded. Teleoconch whorls weakly to strongly convex, with last half-whorl markedly narrower than upper whorls, surface smooth and polished, without sculpture, suture impressed. Aperture wide, nearly oval, weak columella plait (not visible in image due to orientation of shell). Colour translucent yellow brown to reddish brown, occasionally with 2 rows of rectangular chestnut patches; shell becoming opaque with age.

Size: Up to 3 mm in length, usually less than 2 mm.

Distribution: The species was first recognised from Hope Island, north Qld. The only other recognised specimens are from Sydney Harbour; they were named Odostomia leopardis Laseron, 1951, but appear to be the same species.

Habitat: Laseron (1951, p. 308) reported it as "alive on sea-weed, 4 fathoms off Woollahra Point, Port Jackson". Very uncommon.

Synonymy: Odostomia leopardis Laseron, 1951 is a previously recognised synonym.
Des Beechey, The Seashells of New South Wales
Author: Jan Delsing

Links and literature

http://seashellsofnsw.org.au/Pyramidelli...
DESCRIPTION & PICTURE(S) SHELLS NEW SOUTH WALES - AUSTRALIA
EN Australian Faunal Directory [be4ea17b-97fd-4456-b8d1-5b9b84fb91bf]

ABRS (2009-2019): Australian Faunal Directory [https://biodiversity.org.au/afd/home], Australian Biological Resources Study, Canberra [as Sayella abjecta (Hedley, 1909)]
Data retrieved on: 13 February 2015
EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Odostomia abjecta Hedley, 1909]
Data retrieved on: 21 July 2015
EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Odostomia leopardis Laseron, 1951]
Data retrieved on: 21 July 2015

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