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Thapsia
Shell of Thapsia troglodytes (syntype at MNHN? Paris)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Infraorder:	Limacoidei
Superfamily:	Helicarionoidea
Family:	Urocyclidae
Genus:	Thapsia Albers, 1860
Type species
Helix troglodytes Morelet, 1848
Synonyms
Gudeella Preston, 1913 (junior synonym) Megathapsia Raemaekers, 1959 Nanina (Thapsia) E. von Martens, 1860 (superseded rank) Tapsia (misspelling) Thapsia (Gudeella) Preston, 1913 · unaccepted (junior synonym) Thapsiella Gude, 1911 (junior primary homonym of...) Thapsinella Raemaekers, 1959 ·

Thapsia is a genus of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the subfamily Sheldoniinae of the family Urocyclidae.

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
• 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

1. ^ Albers J. C. (1860). "Die Heliceen nach natürlichen Verwantschaft systematisch geordnet, ed. 2" (Manuscript edited by E. von Martens): xviii + 359 pp. Engelmann, Leipzig.
2. 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
3. ^ 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.
4. "WoRMS - World Register of Marine Species - Thapsia hanningtoni (E. A. Smith, 1890)". www.marinespecies.org. Retrieved 17 October 2021.
5. https://www.gbif.org/occurrence/1056994459 Thapsia snelli
6. "WoRMS - World Register of Marine Species - Thapsia vestii (Jickeli, 1873)". www.marinespecies.org. Retrieved 25 October 2021.

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

• Thapsia
• Urocyclidae
• Gastropod genera