Alcadia Explained

Alcadia is a genus of tropical and subtropical land snails with an operculum, terrestrial gastropod mollusks in the subfamily Helicininae of the family Helicinidae. ^[1]

Description

Alcadia differs from the Helicininae in having a slit in front of the aperture, into which is fitted the tooth-like process of the operculum.

Species

Species within the genus Alcadia include:

• Alcadia affinis C.B. Adams, 1846
• Alcadia alta (G. B. Sowerby II, 1866)
• Alcadia aurantia (J. E. Gray, 1824)
• Alcadia bahamensis (L. Pfeiffer, 1862)
• Alcadia bermudezi Aguayo & Jaume, 1957^[2]
• Alcadia binneyana (L. Pfeiffer, 1866)
• Alcadia blandiana Weinland, 1880
• Alcadia boeckeleri (Richling, 2001)
• Alcadia brownii (J. E. Gray, 1824)
• Alcadia bullula Hausdorf, 2006
• Alcadia camagueyana Aguayo & Jaume, 1957^[2]
• Alcadia charmosyne (Pilsbry, 1933)
• Alcadia chocoensis Roosen, 2023
• Alcadia citrinolabris (C. B. Adams, 1849)
• Alcadia concinna (Gundlach in Pfeiffer, 1857)^[2]
• Alcadia consanguinea (C. B. Adams, 1851)
• Alcadia conuloides (Guppy, 1868)
• Alcadia decussata Hausdorf, 2006
• Alcadia delmonteana Pilsbry, 1933
• Alcadia dissimulans (Poey, 1858)^[2]
• Alcadia dubiosa (C. B. Adams, 1850)
• Alcadia erythrozona Dean, 1931
• Alcadia euglypta Clench & Aguayo, 1950^[2]
• Alcadia exigua (L. Pfeiffer, 1849)
• Alcadia gonavensis Weinland, 1880
• Alcadia gonostoma (Gundlach in Poey, 1858)^[2]
• Alcadia guadaloupensis (G. B. Sowerby II, 1842)
• Alcadia haitensis (Maltzan, 1888)
• Alcadia hirsuta (C. B. Adams, 1851)
• Alcadia hispida (Pfeiffer, 1839)^[2]
• Alcadia hjalmarsoni (L. Pfeiffer, 1856)
• Alcadia hojarasca (Richling, 2001)
• Alcadia hollandi (C. B. Adams, 1849)
• Alcadia iheringi A. J. Wagner, 1911
• Alcadia incrustata (Gundlach in Pfeiffer, 1859)^[2]
• Alcadia intusplicata (L. Pfeiffer, 1851)
• Alcadia jamaicensis (G. B. Sowerby II, 1842)
• Alcadia kuehni (L. Pfeiffer, 1872)
• Alcadia lewisi Pilsbry, 1942
• Alcadia macilenta (C. B. Adams, 1849)
• Alcadia major (J. E. Gray, 1824)
• Alcadia mammilla Weinland, 1862
• Alcadia maxima G.B. Sowerby II, 1842
• Alcadia mcleani Clench, 1937
• Alcadia megastoma (C. B. Adams, 1849)
• Alcadia microstoma (C. B. Adams, 1851)
• Alcadia minima (d’Orbigny, 1842)^[2]
• Alcadia moussoniana (L. Pfeiffer, 1866)
• Alcadia neebiana (Pfeiffer, 1862)^[2]
• Alcadia nitida (Pfeiffer, 1839)^[2]
• Alcadia nobilis (C. B. Adams, 1851)
• Alcadia nodulosa Hausdorf, 2006
• Alcadia novogranadensis Hausdorf, 2006
• Alcadia nuda (Arango in Pfeiffer, 1866)^[2]
• Alcadia pellucida (G. B. Sowerby II, 1842)
• Alcadia pompholyx (Pilsbry, 1933)
• Alcadia pusilla (C. B. Adams, 1850)
• Alcadia rhamphostyla (L. Pfeiffer, 1857)
• Alcadia rotunda (d’Orbigny, 1842)^[2]
• Alcadia rufa (L. Pfeiffer, 1857)
• Alcadia schrammi (Crosse, 1872)
• Alcadia sericea (Drouët, 1859)
• Alcadia solitaria (C. B. Adams, 1845)
• Alcadia spectabilis (Pfeiffer, 1858)^[2]
• Alcadia succinea (L. Pfeiffer, 1850)
• Alcadia velutina (Poey, 1858)^[2]

Synonyms of Alcadia

• Alcadia (Alcadia) J. E. Gray, 1840 · alternative representation
• Alcadia (Bellula) A. J. Wagner, 1908 junior subjective synonym
• Alcadia (Eualcadia) A. J. Wagner, 1907 junior subjective synonym
• Alcadia (Glyptalcadia) Boss & Jacobson, 1973 · alternative representation
• Alcadia (Hispida) A. J. Wagner, 1907 junior homonym (invalid; not Bate, 1868, Penisoltia is a replacement name)
• Alcadia (Hjalmarsona) H. B. Baker, 1940 · alternative representation
• Alcadia (Idesa) H. Adams & A. Adams, 1856 alternative representation ^[3]
• Alcadia (Incrustata) A. J. Wagner, 1907 junior homonym
• Alcadia (Intusplicata) A. J. Wagner, 1907 alternative representation
• Alcadia (Leialcadia) A. J. Wagner, 1907 (junior synonym)
• Alcadia (Mamilla) A. J. Wagner, 1907 alternative representation
• Alcadia (Megastoma) A. J. Wagner, 1907 junior homonym (invalid; not Rafinesque, 1814)
• Alcadia (Microalcadia) Richling, 2004 alternative representation
• Alcadia (Palliata) A. J. Wagner, 1907 alternative representation
• Alcadia (Penisoltia) H. B. Baker, 1954 alternative representation
• Alcadia (Weinlandella) H. B. Baker, 1954 unavailable name (unnecessary replacement name for Mamilla)
• Eualcadia A. J. Wagner, 1907 (junior synonym)
• Helicina (Alcadia) J. E. Gray, 1840 (unaccepted rank)
• Helicina (Idesa) H. Adams & A. Adams, 1856 superseded combination
• Helicina (Isoltia) Guppy, 1895 junior subjective synonym
• Helicina (Schrammia) Guppy, 1895 superseded combination
• Hispida A. J. Wagner, 1907 (invalid; not Bate, 1868, Penisoltia is a replacement name)
• Idesa H. Adams & A. Adams, 1856 ·
• Isoltia Guppy, 1895 (junior synonym)
• Leialcadia A. J. Wagner, 1907 ·
• Schrammia Guppy, 1895 junior subjective synonym

Synonyms

• Alcadia appuni (E. von Martens, 1873): synonym of Helicina tamsiana appuni E. von Martens, 1873 (superseded combination)
• Alcadia balteata Aguayo & Jaume, 1954: synonym of Alcadia minima (A. d'Orbigny, 1842) (junior synonym)
• Alcadia capax L. Pfeiffer, 1857: synonym of Alcadia minima (A. d'Orbigny, 1842) (junior synonym)
• Alcadia ciliata (Poey, 1852): synonym of Emoda ciliata (Poey, 1852) (superseded combination)
• Alcadia colombiana (R. A. Philippi, 1847): synonym of Helicina columbiana R. A. Philippi, 1847 (superseded combination)
• Alcadia deppeana (E. von Martens, 1863): synonym of Helicina zephyrina deppeana E. von Martens, 1863 (superseded rank and combination)
• Alcadia dysoni (L. Pfeiffer, 1849): synonym of Helicina dysoni L. Pfeiffer, 1849 (unaccepted combination)
• Alcadia gundlachi L. Pfeiffer, 1854: synonym of Alcadia (Penisoltia) minima (A. d'Orbigny, 1842) represented as Alcadia minima (A. d'Orbigny, 1842)
• Alcadia quinonesi Clench & Aguayo, 1950: synonym of Alcadia minima (A. d'Orbigny, 1842) (junior synonym)
• Alcadia quiñonesi Clench & Aguayo, 1950: synonym of Alcadia minima (A. d'Orbigny, 1842) (misspelling - incorrect original spelling)
• Alcadia striata (Lamarck, 1822): synonym of Helicina striata Lamarck, 1822 (superseded combination)
• Alcadia subfusca (Menke, 1828): synonym of Alcadia striata (Lamarck, 1822): synonym of Helicina striata Lamarck, 1822 (junior synonym)
• Alcadia tamsiana (L. Pfeiffer, 1851): synonym of Helicina tamsiana L. Pfeiffer, 1851 (superseded combination)

References

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

External links

• Boss, K. J.; Jacobson, M. K . Monograph of the genus Alcadia in Cuba (Mollusca: Prosobranchia: Helicinidae). . Bulletin of the Museum of Comparative Zoology at Harvard College . 1973 . 145 . 311–358 . 25 July 2024.
• Baker . H.B. . New subgenera of Antillean Helicinidae . The Nautilus . 1940 . 54 . 2 . 70–71 . 25 July 2024.
• Richling . I. . Classification of the Helicinidae: Review of morphological characteristics based on a revision of the Costa Rican species and application to the arrangement of the Central American mainland taxa (Mollusca: Gastropoda: Neritopsina) . Malacologia . 2004 . 45 . 2 . 195–440 . 25 July 2024.
• Baker . H.B. . New subgeneric names in Helicinidae . The Nautilus . 1954 . 67 . 4 . 139–140 . 25 July 2024.
• Book: Wagner . A.J. . Die Familie der Helicinidae. In: Küster, H. C. & Kobelt, W., Eds., Systematisches Conchylien-Cabinet von Martini und Chemnitz, Neue Folge. Ersten Bandes, achtzehnte Abtheilung, zweiter Theil. . 1907–1911 . Bauer & Raspe . Nürnberg . 25 July 2024.
• Guppy . R. J. L . On a landshell of the genus Helicina from Grenada and on the classification of the Helicinidae. . Proceedings of the Victoria Institute of Trinidad . 1895 . 72–77 . 25 July 2024.
• Book: Adams, H. & Adams, A. . The genera of Recent Mollusca; arranged according to their organization . 1853–1858 . van Voorst . London . 304 . 25 July 2024.

Notes and References

1. MolluscaBase eds. (2024). MolluscaBase. Alcadia J. E. Gray, 1840. Accessed through: World Register of Marine * At: https://www.marinespecies.org/aphia.php?p=taxdetails&id=996448 on 2024-07-24
2. http://www.ecosis.cu/cenbio/biodiversidadcuba/fauna/mollusca.htm "Mollusca"
3. [Henry Adams (zoologist)|Adams H.]