Candidula
Candidula is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Geomitridae, . [2][3] the hairy snails and their allies.
| Candidula | |
|---|---|
![]()  | |
| Two live individuals of Candidula unifasciata | |
| Scientific classification  | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Mollusca | 
| Class: | Gastropoda | 
| Subclass: | Heterobranchia | 
| Order: | Stylommatophora | 
| Family: | Geomitridae | 
| Genus: | Candidula Kobelt, 1871[1]  | 
| Type species | |
| Glischrus (Helix) candidula Studer, 1820  | |
| Synonyms | |
  | |
The genus is characterized by the presence of a big dart sac, a sac containing an arrow-like structure found on a land snail's reproductive organs.
Species
    
Species within the genus Candidula s.l. include:[4]
- Candidula candidescens A. J. Wagner, 1928 (taxon inquirendum)
 - Candidula castriota Soós, 1924
 - Candidula cavannae (Paulucci, 1881)
 - Candidula codia (Bourguignat, 1859)
 - Candidula eustricta (Bourguignat, 1863) [5]
 - Candidula lernaea Hausdorf, 1991
 - Candidula rhabdotoides (Wagner, 1928)
 - Candidula rugosiuscula (Michaud, 1831)
 - † Candidula soosi (Gaál, 1910)
 - Candidula syrensis (Pfeiffer, 1846) species-complex! (taxon inquirendum)
 - Candidula unifasciata (Poiret, 1801) - type species
 - Candidula verticillata (Pfeiffer, 1871) (taxon inquirendum, generic affiliation unclear)
 
- Species brought into synonymy
 
- Candidula arganica (Servain, 1880): synonym of Zarateana arganica (Servain, 1880) (invalid combination)
 - Candidula belemensis (Servain, 1880): synonym of Xeroplexa belemensis (Servain, 1880)
 - Candidula camporroblensis (Fez, 1944): synonym of Backeljaia camporroblensis (Fez, 1944) (invalid combination)
 - Candidula corbellai Martínez-Ortí, 2011: synonym of Backeljaia corbellai (Martínez-Ortí, 2011) (original combination)
 - Candidula coudensis Holyoak & Holyoak, 2010: synonym of Xeroplexa coudensis (Holyoak & Holyoak, 2010) (original combination)
 - Candidula fiorii (Alzona & Alzona Bisacchi, 1938): synonym of Xerogyra fiorii (Alzona & Alzona Bisachii, 1938) (invalid combination)
 - Candidula gigaxii (Pfeiffer, 1847): synonym of Backeljaia gigaxii (L. Pfeiffer, 1847) (invalid combination)
 - Candidula grovesiana (Paulucci, 1881): synonym of Xerogyra grovesiana (Paulucii, 1881) (invalid combination)
 - Candidula intersecta (Poiret, 1801): synonym of Xeroplexa intersecta (Poiret, 1801) (invalid combination)
 - Candidula najerensis (Ortiz de Zárate y López, 1950): synonym of Backeljaia najerensis (Ortiz de Zárate y López, 1950) (invalid combination)
 - Candidula olisippensis (Servain, 1880): synonym of Xeroplexa olisippensis (Servain, 1880) (invalid combination)
 - Candidula rocandioi (Ortiz de Zárate y López, 1950): synonym of Zarateana rocandioi (Ortiz de Zárate y López, 1950) (invalid combination)
 - Candidula setubalensis (Pfeiffer, 1850): synonym of Xeroplexa setubalensis (L. Pfeiffer, 1850) (invalid combination)
 - Candidula spadae (Calcara, 1845): synonym of Xerogyra spadae (Calcara, 1845) (invalid combination)
 - † Candidula striataformis (Lörenthey, 1906): synonym of † Helicella striataformis (Lörenthey, 1906)
 - Candidula ultima (Mousson, 1872): synonym of Orexana ultima (Mousson, 1872) (invalid combination)
 
Taxonomy
    
Molecular phylogenetic studies revealed the polyphyly of the genus being divided into at least six genera[6]
The species of Candidula s.l. should be classified as follows:
- Backeljaia
- Backeljaia camporroblensis (Fez, 1944)
 - Backeljaia corbellai (Martínez-Ortí, 2011)
 - Backeljaia gigaxii (Pfeiffer, 1847) type species
 - Backeljaia najerensis (Ortiz de Zárate y López, 1950)
 
 - Candidula
 - Orexana
- Orexana ultima (Mousson, 1872) type species
 
 - Xerogyra
- Xerogyra fiorii (Alzona & Alzona Bisacchi, 1938)
 - Xerogyra grovesiana (Paulucci, 1881)
 - Xerogyra spadae (Calcara, 1845)
 
 - Xeroplexa
- Xeroplexa arrabidensis (Holyoak & Holyoak, 2014)
 - Xeroplexa belemensis (Servain, 1880): synonym of Xeroplexa belemensis (Servain, 1880)
 - Xeroplexa carrapateirensis (Holyoak & Holyoak, 2014)
 - Xeroplexa coudensis (Holyoak & Holyoak, 2010)
 - Xeroplexa intersecta (Poiret, 1801)
 - Xeroplexa olisippensis (Servain, 1880)
 - Xeroplexa ponsulensis (Holyoak & Holyoak, 2014)
 - Xeroplexa scabiosula (Locard, 1899)
 - Xeroplexa setubalensis (Pfeiffer, 1850) type species
 - Xeroplexa strucki (Maltzan, 1886)
 
 - Zarateana
- Zarateana arganica (Servain, 1880) type species
 - Zarateana rocandioi (Ortiz de Zárate y López, 1950)
 
 
References
    
- (in German) Kobelt W. (1871). Catalog der im europäischen Faunengebiet lebenden Binnenconchylien. Mit besonderer Berücksichtigung der in Rossmässler's Sammlung enthaltenen Arten. pp. I-XVI [= 1-16], 1-150. Cassel. page 22. PDF.
 - MolluscaBase eds. (2020). MolluscaBase. Candidula Kobelt, 1871. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=426353 on 2020-07-25
 - Razkin, Oihana; Gómez-Moliner, Benjamín Juán; Prieto, Carlos Enrique; Martínez-Ortí, Alberto; Arrébola, José Ramón; Muñoz, Benito; Chueca, Luis Javier; Madeira, María José (February 2015). "Molecular phylogeny of the western Palaearctic Helicoidea (Gastropoda, Stylommatophora)". Molecular Phylogenetics and Evolution. 83: 99–117. doi:10.1016/j.ympev.2014.11.014. PMID 25485783.
 - Welter Schultes F.(2009). "Genus summary for Candidula". AnimalBase, Accessed 14 November 2014.
 - WMSDB: Candudula eustricta
 - Chueca, Luis J.; Gómez-Moliner, Benjamín J.; Madeira, María José; Pfenninger, Markus (January 2018). "Molecular phylogeny of Candidula (Geomitridae) land snails inferred from mitochondrial and nuclear markers reveals the polyphyly of the genus". Molecular Phylogenetics and Evolution. 118: 357–368. doi:10.1016/j.ympev.2017.10.022. PMID 29107619.
 
- Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017.
 
External links
    
- Monterosato, T. A. di. (1892). Molluschi terrestri delle isole adiacenti alla Sicilia. Atti della Reale Accademia di Scienze, Lettere e Belle Arti di Palermo. 3rd Series, 2: 1-34
 - Chueca, L. J., Gómez-Moliner, B. J., Madeira, M. J. & Pfenninger, M. (2018). Molecular phylogeny of Candidula (Geomitridae) land snails inferred from mitochondrial and nuclear markers reveals the polyphyly of the genus. Molecular Phylogenetics and Evolution. 118: 357-368
 
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