Thapsia

''Thapsia'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Sheldoniinae of the family Urocyclidae. MolluscaBase eds. (2022). MolluscaBase. Thapsia E. von Martens, 1860. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=996919 on 2022-09-24

Distribution

Species in this genus are found in tropical western Africa, from Senegal to Gabon.

Description

Species attributed to the genus ''Thapsia'' sensu lato have shell diameters ranging from about 15 to 30 mm, with 5½-6½ whorls. These rather featureless dextral shells are characterized by a low spire and their yellow to brown color. The spiral sculpture of the postembryonic shell is slender. In some larger * The sculpture of the radial ribs is formed crosswise (like the letter X) or beadlike. The foot shows a long caudal horn.

Species

''Thapsia'' was originally designated in 1860 by German zoologist Johann Christian Albers as a subgenus of ''Nanina'' Gray, 1834, non Risso, 1826.

This genus is a heterogeneous assemblage. Because the shell characters of this genus converge with those of the larger specimens of some closely related genera ('' Saphtia'' Winter, 2008, '' Pseudosaphtia'' Winter, 2008 and '' Vanmolia'' Winter, 2008), the delimitation of * To ''Thapsia'' s.l. is difficult. There very few papers that describe the anatomical features of this genus.

Thapsia contains the following species:

* ''Thapsia abyssinica'' (Jickeli, 1873)
* ''Thapsia aranea'' (Preston, 1914)
* ''Thapsia bartaensis'' (Preston, 1914)
* ''Thapsia buchholzi'' Bourguignat, 1885
* ''Thapsia buraensis'' Verdcourt, 1982
* ''Thapsia cavernicola'' d'Ailly, 1910
* ''Thapsia cinnamomeozonata'' Pilsbry, 1919
* ''Thapsia columellaris'' (L. Pfeiffer, 1849)
* ''Thapsia consobrina'' (Preston, 1914)
* ''Thapsia consueta'' (Preston, 1914)
* ''Thapsia conuloidea'' Preston, 1911
* '' Thapsia curvatula'' E. von Martens, 1897
* ''Thapsia decepta'' E. A. Smith, 1899
* '' Thapsia densesculpta'' (Preston, 1914)
* ''Thapsia depressior'' (E. A. Smith, 1890)
* ''Thapsia ebimimbangana'' Winter, 2008
* ''Thapsia elgonensis'' (Preston, 1914)
* '' Thapsia eminiana'' (E. A. Smith, 1890)
* '' Thapsia eremias'' (Melvill & Ponsonby, 1896)
* '' Thapsia eucosmia'' Pilsbry, 1919
* ''Thapsia exasperata'' Preston, 1910
* ''Thapsia gereti'' Preston, 1910
* ''Thapsia glomus'' (E. von Martens, 1860)
* '' Thapsia grandis'' Verdcourt, 1982
* ''Thapsia hanningtoni'' (Smith, 1890)
* ''Thapsia inclinans'' (Preston, 1914)
* '' Thapsia indecorata'' (Gould, 1850)
* ''Thapsia inflata'' (Preston, 1914)
* ''Thapsia innocens'' Preston, 1910
* ''Thapsia insimulans'' E. A. Smith, 1899
* '' Thapsia insulsa'' Preston, 1910
* ''Thapsia iridescens'' (Preston, 1914)
* ''Thapsia kampalaensis'' (Preston, 1914)
* '' Thapsia karamwegasensis'' Germain, 1923
* ''Thapsia kibonotoensis'' d'Ailly, 1910
* ''Thapsia kigeziensis'' (Preston, 1913)
* ''Thapsia lasti'' (E. A. Smith, 1890)
* ''Thapsia leroyi'' Grandidier, 1887
* ''Thapsia magna'' Thiele, 1933
* ''Thapsia majendooensis'' (Connolly, 1928)
* ''Thapsia marsabitensis'' (Preston, 1914)
* ''Thapsia masakaensis'' (Preston, 1914)
* ''Thapsia masukuensis'' E. A. Smith, 1899
* '' Thapsia microleuca'' Verdcourt, 1982
* '' Thapsia microsculpta'' Verdcourt, 1982
* ''Thapsia millestriata'' (Preston, 1912)
* ''Thapsia mime'' (Preston, 1914)
* ''Thapsia mukandaensis'' (Preston, 1914)
* ''Thapsia mukulensis'' Pilsbry, 1919
* ''Thapsia multistriata'' (Preston, 1914)
* ''Thapsia nemorum'' (Preston, 1914)
* ''Thapsia nyikana'' E. A. Smith, 1899
* '' Thapsia oleosa'' (L. Pfeiffer, 1850)
* ''Thapsia oscitans'' Connolly, 1925
* '' Thapsia pallidior'' (Preston, 1914)
* ''Thapsia paucispirata'' Thiele, 1933
* '' Thapsia pinguis'' (Krauss, 1848)
* ''Thapsia pompholyx'' Pilsbry, 1919
* ''Thapsia punctata'' Thiele, 1933
* '' Thapsia radiata'' d'Ailly, 1910
* '' Thapsia rosenbergi'' Preston, 1909
* ''Thapsia rufescens'' Pilsbry, 1919
* ''Thapsia rufocincta'' (Connolly, 1941)
* ''Thapsia rutshuruensis'' Pilsbry, 1919
* † ''Thapsia senutae'' Pickford, 2019
* ''Thapsia silvaepluviosae'' d'Ailly, 1910
* ''Thapsia simulata'' E. A. Smith, 1899
* ''Thapsia snelli''Connolly, 1925 https://www.gbif.org/occurrence/1056994459 Thapsia snelli
* '' Thapsia stanleyvillensis'' Pilsbry, 1919
* ''Thapsia submixta'' Germain, 1935
* '' Thapsia tribulationis'' (Preston, 1914)
* '' Thapsia tricolor'' (Connolly, 1925)
* ''Thapsia troglodytes'' (Morelet, 1848) - the type species, originally described as ''Helix troglodytes'' Morelet, 1848
* ''Thapsia uluguruensis'' Verdcourt, 1982
* '' Thapsia unguinosa'' Pollonera, 1898
* ''Thapsia urguessensis'' (Preston, 1914)
* ''Thapsia usambarensis'' Verdcourt, 1982
* ''Thapsia usitata'' (Preston, 1914)
* ''Thapsia vernhouti'' (Preston, 1913)
* '' Thapsia vestii'' (Jickeli, 1873)
* ''Thapsia wieringai'' de Winter, 2008
* '' Thapsia woodhousei'' (Preston, 1914)
* ''Thapsia yalaensis'' Germain, 1923
* ''Thapsia zambiensis'' Pilsbry, 1919

Synonyms

* ''Thapsia calamechroa'' (Jonas, 1843): synonym of '' Saphtia calamechroa'' (Jonas, 1843) (superseded combination)
* ''Thapsia calamichroa'' (Jonas, 1843): synonym of '' Saphtia calamechroa'' (Jonas, 1843) (invalid; incorrect subsequent spelling)
* ''Thapsia chrysosticta'' (Morelet, 1867): synonym of '' Apothapsia thomensis'' (Dohrn, 1866)
* ''Thapsia euriomphala'' Bourguignat, 1883: synonym of ''Thapsia abyssinica'' (Jickeli, 1873)
* ''Thapsia germaini'' Connolly, 1925: synonym of '' Apothapsia thomensis'' (Dohrn, 1866)
* ''Thapsia gerstenbrandti'' (Preston, 1914): synonym of ''Thapsia elgonensis'' (Preston, 1914) (junior synonym)
* ''Thapsia mixta'' E. A. Smith, 1899: synonym of ''Thapsia pinguis'' (Krauss, 1848)
* ''Thapsia rumrutiensis'' Preston, 1911: synonym of ''Afroguppya rumrutiensis'' (Preston, 1911) (original combination)
* ''Thapsia sjoestedti'' d'Ailly, 1896: synonym of '' Vanmolia sjoestedti'' (d'Ailly, 1896) (original combination)
* ''Thapsia thomensis'' (Dohrn, 1866): synonym of '' Apothapsia thomensis'' (Dohrn, 1866)

References

* Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017.

External links

Albers, J. C. & Martens, E. von. (1860). Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet von Joh. Christ. Albers. Ed. 2. Pp. i-xviii, 1-359. Leipzig: Engelman

Winter, A. J. de. (2008). Redefinition of Thapsia Albers, 1860, and description of three more helicarionoid genera from western Africa (Gastropoda, Stylommatophora). Zoologische Mededelingen 82(41): 441–477

{{Commons category

Urocyclidae