Description
Author: Jan Delsing
Text ID: 98994
Text Type: 1
Page: 0
Created: 2020-02-12 19:45:04 - User Delsing Jan
Language: EN
Text function: [[t:1392236,textblock=98994,elang=EN;Description]]
Shell small, thin but solid; shape moderately broad with low, conical spire and slightly stretched base.
Tip of protoconch chipped, number of whorls according to traces 3,5 , remaining whorls 2,75 in number, smooth, glossy, last 0,25 whorls with minute, irregular wrickled axial ribblets. Transition to teleoconch distinct, marked by sharp line and sudden appearance of teleoconch sculpture. Teleoconch consisting of 5,25 weakly convex whorls. Shape biconical, with broad, fusiform spire, base weakly prolonged. Axial sculpture dominant. Colour pale orange-brown with pink apex; spiral cords with fine, darker spiral line; top of axial ribs slightly paler. First teleoconch whorl with 2 fine primary spiral cords with broad interspace, 2 fine spiral threads on subsutural slope, fifth spiral cord partly concealed under suture of subsequent whorl. Interspaces gradually broader along second whorl with 1 or 2 fine secondary spiral threads. One spiral on subsutural slope growing bigger along third whorl, as strong as primary spiral cords on fourth whorl. Penultimate whorl with 3 primary spiral cords; interspaces broad with 7 secondary spiral cords, central one slightly stronger. Body whorl with 10 such primary spiral cords. All spire whorls with 8 broad, well pronounced axial ribs; interspaces moderately narrow. Body whorl with 9 axial ribs.
Aperture typical for genus, narrow, semitriangular, adapical border weakly flattened, abapical part towards siphonal canal slightly narrower. Outer lip thick; edge sharp, glossy, weakly curved outwards; with weak but broad anal knob separated by moderately broad adapical gap from other 4 internal knobs. Columella gently curved, typical for genus with smooth parietal; columella with 1 fine denticle and 2 slightly stronger columellar folds running deep into aperture. Callus thin, edge projecting. Siphonal canal moderately long, broad, open. Aperture and siphonal canal together slightly less than 1/2 of total shell length.
Fraussen K. & Stahlschmidt P. (2016). Revision of the Clivipollia group (Gastropoda: Buccinidae: Pisaniinae) with description of two new genera and three new species.
Interchangeable taxa
Author: Jan Delsing
Text ID: 98995
Text Type: 19
Page: 0
Created: 2020-02-12 19:53:01 - User Delsing Jan
Language: EN
Text function: [[t:1392236,textblock=98995,elang=EN;Interchangeable taxa]]
Clivipollia delicata sp. nov. is characterized by the pale orange-brown colour with fine reddish brown spiral lines on top of spiral sculpture. Clivipollia pulchra differs by the much broader primary spiral cords and narrower spiral interspaces, the bright orange colour and the darker spiral lines situated in the spiral interspaces. Clivipollia incarnata differs by the slightly broader primary spiral cords, the slightly higher number of axial ribs and the whorls that increase in size faster, resulting in a larger size for shells with a same number of teleoconch whorls.
Fraussen K. & Stahlschmidt P. (2016). Revision of the Clivipollia group (Gastropoda: Buccinidae: Pisaniinae) with description of two new genera and three new species.