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Euhadra

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Euhadra
Euhadra quaesita
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Camaenidae
Subfamily: Bradybaeninae
Tribe: Euhadrini
Genus: Euhadra
Pilsbry, 1890[1]
Synonyms
  • Eulota (Euhadra) Pilsbry, 1890
  • Helix (Euhadra) Pilsbry, 1890

Euhadra is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Bradybaeninae of the family Camaenidae.[2]

(This snail genus was previously placed in the family Eulotidae).

A few of the species in this genus are unusual in that specimens in those species always have left-handed "sinistral" coiling in their shells, as shown in the specimen on the right. The rest of the species in the genus are right-handed or "dextral" in the shell coiling, as is usually the case in the great majority of gastropods.

Distribution

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These snails are almost endemic to Japan, but one of them are distributed in Korea.

Species

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Most species in this genus have a dextral shell and 5 species are sinistral.[3]

Dextral species

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Dextral species in the genus Euhadra include:

Sinistral species

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Euhadra murayamai

Sinistral species in the genus Euhadra include:

Species brought into synonymy
  • Euhadra amphidroma Möllendorff, 1899: synonym of Trichocathaica amphidroma (Möllendorff, 1899) (original combination)
  • Euhadra carphochroa Möllendorff, 1899: synonym of Bradybaena carphochroa (Möllendorff, 1899) (original combination)
  • Euhadra eris Möllendorff, 1899: synonym of Bradybaena eris (Möllendorff, 1899) (original combination)
  • Euhadra halpozona Möllendorff, 1899: synonym of Bradybaena halpozona (Möllendorff, 1899) (original combination)
  • Euhadra hickonis Kobelt, 1879: synonym of Euhadra congenita (E. A. Smith, 1878) (junior synonym)
  • Euhadra iwadensis Toba & Kuroda, 1936: synonym of Euhadra decorata decorata (Pilsbry & Hirase, 1903) (junior synonym)
  • Euhadra kanmuriensis Azuma & Tada, 1969: synonym of Euhadra sandai communis Pilsbry, 1928 (junior synonym)
  • Euhadra kanoi Kuroda, 1932: synonym of Nesiohelix kanoi (Kuroda, 1932) (original combination)
  • Euhadra koreana (L. Pfeiffer, 1850): synonym of Fruticicola koreana (L. Pfeiffer, 1850)
  • Euhadra micromphala Möllendorff, 1899: synonym of Bradybaena micromphala (Möllendorff, 1899) (original combination)
  • Euhadra pekanensis H. Rolle, 1911: synonym of Satsuma pekanensis (H. Rolle, 1911) (original combination)
  • Euhadra pseudocampylaea Möllendorff, 1899: synonym of Bradybaena pseudocampylaea (Möllendorff, 1899) (original combination)
  • Euhadra pseudopapuina Möllendorff, 1901: synonym of Aegista pseudopapuina (Möllendorff, 1901) (original combination)
  • Euhadra strauchiana Möllendorff, 1899: synonym of Bradybaena strauchiana (Möllendorff, 1899) (original combination)
  • Euhadra strictotaenia Möllendorff, 1899: synonym of Bradybaena strictotaenia (Möllendorff, 1899) (original combination)
  • Euhadra tenuitesta Möllendorff, 1899: synonym of Bradybaena tenuitesta (Möllendorff, 1899) (original combination)
  • Euhadra tobai S. Hirase, 1929: synonym of Euhadra decorata decorata (Pilsbry & Hirase, 1903) (junior synonym)
  • Euhadra tokarana Azuma, 1982: synonym of Euhadra tokarainsula tokarainsula Minato & Habe, 1982

References

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  1. ^ Pilsbry H. A. (1890) In: Tryon & Pilsbry, Manual of Conchology (2)6: 94-95.
  2. ^ MolluscaBase eds. (2021). MolluscaBase. Euhadra Pilsbry, 1890. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=995784 on 2021-02-08
  3. ^ Davison A, Chiba S, Barton NH, Clarke B (2005). "Speciation and Gene Flow between Snails of Opposite Chirality". PLOS Biology. 3 (9, e282): e282. doi:10.1371/journal.pbio.0030282. PMC 1182688. PMID 16149849. Open access icon

Further reading

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Wikimedia Commons has media related to Euhadra.
  • Richards, Paul M.; Morii, Yuta; Kimura, Kazuki; Hirano, Takahiro; Chiba, Satoshi; Davison, Angus (1 December 2017). "Single-gene speciation: Mating and gene flow between mirror-image snails". Evolution Letters. 1 (6): 282–291. doi:10.1002/evl3.31. ISSN 2056-3744. PMC 6121799. PMID 30283656.
  • Ueshima R. & Asami T. (16 October 2003). "Evolution: Single-gene speciation by left–right reversal". Nature 425: 679. doi:10.1038/425679a
  • (in Japanese) Kawana M. (2007). かたつむりの世界〈マイマイ属〉 The world of land snails (Euhadra) in Japan. Nagoya, Kinmirai-sha. 332 pp. ISBN 978-4-906431-25-0 (with English introduction)
  • Yamazaki N., Ueshima R., Terrett J. A., Yokobori S., Kaifu M., Segawa R., Kobayashi T., Numachi K., Ueda T., Nishikawa K., Watanabe K. & Thomas R. H. (1997). "Evolution of pulmonate gastropod mitochondrial genomes: comparisons of complete gene organizations of Euhadra, Cepaea and Albinaria and implications of unusual tRNA secondary structures". Genetics 145: 749-758.
  • Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16, 2017
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