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Taxon profile

species

Drillia caffra E. A. Smith, 1882

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Drilliidae »  genus Drillia

Scientific synonyms

Drillia nereia W. H. Turton, 1932

Images

Drillia caffra

Author: Jan Delsing

Drillia caffra

Author: Kilburn, R.N.

Drillia caffra

Author: Turton, W. H.

Taxon in country check-lists*

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Description

Diagnosis: Shell with apex neither very acute nor papilliform, b/l 0,36-0,44, a/l 0,33-0,42, body whorl somewhat oblong-obconical, aperture rather large, whorls shouldered, with periphery at or above middle, subsutural cord very feeble; axial ribs short but not tubercle-like, 10-15 on penultimate whorl, crossed by very fine spiral threads; labrum not foreshortened, parietal nodule strong, constricting anal sinus; salmon-pink, or light to deep brown, speckled with off-white; protoconch breadth 1,20-1,30 mm, b/h 0,88-1,04; attains 23,7 mm.
Description: Shell claviform (b/l 0,36-0,44, a/l 0,33-0,42), spire somewhat cyrtoconic, apex moderately acute and orthoconic. Teleoconch whorls numbering up to 6, first 1-2 weakly convex, remainder with rounded shoulder, situated a quarter- to half-whorl below suture where it usually forms the periphery; shoulder slope shallowly concave, subsutural cord not developed; left side of base of body whorl concave, with a well-developed fasciole, sometimes with a chink-like false umbilicus next to columella callus. Aperture oblong-lanceolate, greatest width more or less median, siphonal canal wide, not bent to right, its termination well indented dorsally; columella straight to slightly convex, labial callus thick, its outer edge slightly free on columella, parietal pad large, wedgeshaped, constricting entrance to anal sinus; labrum very gently convex in sideview, with very shallow stromboid notch, anal sinus deep, U-shaped, bordered by weakly alate expansion of lip. Sculptured by short, rather low axial ribs and very fine spiral threads; no prelabral varix. Axial ribs opisthocline, straight, terminating at shoulder (where they form weak nodules), and on body whorl at level of parietal tubercle; crests rounded, with gradually sloping sides; 11-14 on 1st whorl, 10-15 on penultimate whorl, 12-18 on last one. Spiral threads very fine and dense, covering entire outer surface, uniform in strength except on rostrum where somewhat coarser. Dimensions: 23,7 x 8,5 mm, 14,0 x 6,1 mm (largest and smallest adult respectively). Protoconch bluntly conical (rarely slightly papilliform), of about 2 whorls, the initial one depressed; smooth except for weak axial riblets and faint spiral threads near termination, lip reversed sigmoid; breadth 1.20-1,30 mm, height 1,05-1,30 mm (b/h 0,88-1,04). Operculum and soft parts unknown.
Kilburn, R.N., 1988. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 4. Subfamilies Drillinae, Crassispirinae and Strictispirinae

Interchangeable taxa

Two geographic colour morphs: (a) Western form: light orange (rarely strong orange), base and immediate subsutural region paler, suture bordered by a row of small brown flecks; (b) Eastern form: light or moderate brown to brownish-orange, heavily flecked with yellowish-white, forming a series of pale shoulder spots on ribs, and sometimes arranged in broken spiral lines or axial zigzags.
Kilburn, R.N., 1988. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 4. Subfamilies Drillinae, Crassispirinae and Strictispirinae

Distribution

South Africa. Jeffreys Bay to eastern Transkei. littoral to 90 m.
Kilburn, R.N., 1988. Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 4. Subfamilies Drillinae, Crassispirinae and Strictispirinae
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Drillia caffra Smith, 1882]
Data retrieved on: 23 November 2013

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