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Etrema tortilabia Ch. Hedley, 1922

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Obrázky

Etrema tortilabia

Autor: Hedley

Etrema tortilabia

Autor: Tardy, E. & Stahlschmidt, P.

Taxon v check-listech zemí*

* Výčet zemí nemusí být kompletní

EN  

Popis

Shell small, solid, acicular, contracted at the base, and a little excavate below the suture. Whorls eight, three and a half of which form the protoconch, of which the apex is produced and the third whorl is keeled. Colour faded in my examples, but the oral callosities retain a brown or yellow stain. Sculpture: on the upper whorls are two spirals, and on the last eleven, which become closer and smaller anteriorly; the radials are stout round-backed ribs, which bulge at the periphery of the upper whorls, and are set at seven or eight to a whorl. Aperture: the mouth is triangular, contracted by a bend of the lip; sinus horizontal, spout-like, with a C section ; columella with two or three small transverse plaits; canal short, a little recurved. Length 4,8 mm., breadth 1,6 mm.
Hedley, C., 1922; A revision of the Australian Turridae

Možné záměny

This has a general resemblance to Glyphostoma trigonostoma Hervier, but the Queensland shell is smaller, tapers more sharply to a point, is more contracted at the sutures, and has fewer spirals.
Hedley, C., 1922; A revision of the Australian Turridae

Rozšíření

Australia: Queensland 5 to 8 fathoms; Murray Island (type) 5 to 10 fathoms; Hope Island 20 fathoms; Darnley Island 20 fathoms; off Endeavour Reef.
Hedley, C., 1922; A revision of the Australian Turridae

Odkazy a literatura

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [jako Etrema tortilabia Hedley, 1922]
Datum citace: 23. listopad 2013

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