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Taxon profile

species

Aspella producta (W. H. Pease, 1861)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Muricidae - Muricids »  genus Aspella

Images

Aspella producta

Author: Tröndle & Houart

Aspella producta

Author: Kaicher

Aspella producta

Author: Marais, A. P. & Seccombe, A. D.

Aspella producta

Author: Bosch et al.

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Size

Maximum length is 20 mm.

Description

The shell is large for the genus (maximum length 20 mm ) and lanceolate. The spire is high and acute, consisting of one and one-half translucent, polished nuclear whorls and eight or nine convex to subangulate postnuclear whorls. The suture, where visible, is strongly impressed. The body whorl is relatively short and broadly trigonal. The aperture is small and ovate, with a weak anal sulcus. The outer apertural lip is barely erect, if at all, and bears on its inner surface series of eight small denticles. The columellar lip is smooth and completely adherent. The siphonal canal is short, bent slightly to the left or right and dorsally, and narrowly open.
The body whorl bears four lateral varices, two on each side. The two main varices have receded to form low axial costae or have completely disappeared, leaving only buttresses at the suture. Considered in ventral aspect, the dorsal varix on the left and the ventral varix on the right are expanded into Hanges; the ventral varix on the left and the dorsal varix on the right are relatively less expanded. Spiral sculpture consists of six major cords, a pair on the upper body ( at the shoulder margin and shortly beneath it), a third cord at the base of the body, and two of these cords on the siphonal canal. Between the varices a series of three to five more or less streng pustules are apparent on the cords. The broad-based nature of these pustules may impart a more angulate whorl profile in some specimens than in others.
The shell is white or yellow-white and is covered by a moderately thick, flat-white, finely cancellate intritacalx. The aperture is lustrous white or yellow-white.
[Radwin & D'Attilio, 1976.]

Interchangeable taxa

This species differs from all its congeners in its larger average size, its strong, pustulose spiral sculpture, and its minutely cancellate intritacalx.

Distribution

Tropical Indo-West Pacific, from eastern Africa (Zanzibar) to Taiwan and the Hawaiian Islands.
Authors: Jan Delsing, Radwin & D'Attilio, 1976.

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Aspella producta Pease, 1961]
Data retrieved on: 29 November 2013

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