CZ EN
SEARCH  

Taxon profile

species

Chrysallida sarsi F. Nordsieck, 1977

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

Images

Chrysallida sarsi

Author: Hoisaeter, T.

Chrysallida sarsi

Author: Waren, A.

Chrysallida sarsi

Author: Aartsen, van & Menckhorst

Chrysallida sarsi

Author: Linden, van der & Eikenboom

Taxon in country check-lists*

* List of countries might not be complete

Description

General description (after 757 shells from 11 localities). — The shell is ovoid-conical with a blunt top. The protoconch is of type B, tending to C. There are three or four slightly convex teleoconch whorls, the last one often more convex than the others. The suture is narrow and shallow, more or less oblique. The ribs are rather thin, numerous and close together, the interstices as broad as, or narrower than, the ribs. On the first whorl the ribs are occasionally straight, on the other whorls they are always sinuous. Their position is vertical or inclined to the right. Around the periphery of the last whorl, the ribs and spiral ridges both decrease and disappear. The spirals are thin, sometimes hardly visible. On the last whorl there are seven to nine spiral ridges on its lower 2/3. The penultimate whorl has three to four spirals on its lower half and the antepenultimate whorl (on shells with four whorls) two or three. The oldest teleoconch whorl has no spirals, or one just above the abapical suture. The aperture is rather high, drop-shaped, without either a tooth or a pleat. Generally there is an insignificant umbilical groove.
Length 1.9-2.7 mm, LW 52-69%, A 29-42%, L/B 2.0-2.7, B/b 1.5-1.9 (based on 42 shells).
Van der Linden, J. & Eikenboom, J.C.A., 1992. On the taxonomy of the Recent species of the genus Chrysallida Carpenter from Europe, the Canary Islands and the Azores (Gastropoda, Pyramidellidae)

Interchangeable taxa

According to Waren (1991), C. sarsi is most reliably distinguished from P. indistincta in being proportionally wider and having 13 axial ribs visible rather than 10-11 visible ribs in P. indistincta. At least six, usually eight or more spiral cords on lower part of body whorl.

Distribution

Distribution: Its presence in Norway is based on two shells from the Bergen area mentioned in Waren (1991). Outside Norway he reports 12 specimens from the Koster area in western Sweden. Otherwise it is known from the Atlantic coasts of Europe south to NW Spain (Waren 1991).

From the Netherlands, south to NW. Spain. Rare in Brittany and the only rather common Chrysallida on the Dutch coast (C. sarsi has the same distribution as C. juliae, from the south of Brittany to NW Spain). Nordsieck (1972) reports the species as from the north of Norway to Biscaya.
Van der Linden, J. & Eikenboom, J.C.A., 1992. On the taxonomy of the Recent species of the genus Chrysallida Carpenter from Europe, the Canary Islands and the Azores (Gastropoda, Pyramidellidae)
Author: Jan Delsing

Similar species

Parthenina indistincta (Montagu, 1808)
Parthenina juliae (de Folin, 1872)

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Chrysallida sarsi (Nordsieck, 1972)]
Data retrieved on: 23 November 2013

Contributions to BioLib

Help us to expand this encyclopedia! If you are logged in, you can add new subtaxa, vernacular and scientific names, texts, images or intertaxon relationships for this taxon.

Comments