Euhadra
Encyclopedia
Euhadra is a genus
of air-breathing land snail
s, terrestrial
pulmonate gastropod mollusks in the family Bradybaenidae. (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.
shell and 5 species are sinistral.
Sinistral species in the genus Euhadra include:
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of air-breathing land snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s, terrestrial
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...
pulmonate gastropod mollusks in the family Bradybaenidae. (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.
Species
There are 22 species in the genus. 17 species have a dextralLaterality
Laterality is the preference that most humans show for one side of their body over the other. Examples include right-handedness or left-footedness. It may also apply to other animals, or to plants.- Human laterality :...
shell and 5 species are sinistral.
Dextral species
Dextral species in the genus Euhadra include:- Euhadra amaliaeEuhadra amaliaeEuhadra amaliae is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae.- External links :*...
(Kobelt, 1875) - Euhadra awaensis
- Euhadra brandtii
- Euhadra callizona
- Euhadra congenita
- Euhadra dixoni (Pilsbry, 1900)
- Euhadra eoa
- Euhadra herklotsi (Martens, 1861)
- Euhadra idzumonis
- Euhadra kunoensis Kuroda in Masuda & Habe, 1989
- Euhadra latispira
- Euhadra latispira yagurai Kuroda & Habe, 1949 http://opencage.info/pics/Euhadra_latispira_yagurai.asp
- Euhadra nachicolaEuhadra nachicolaEuhadra nachicola is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is endemic to Japan....
- Euhadra nesiotica (Pilsbry,1902)
- Euhadra peliomphalaEuhadra peliomphalaEuhadra peliomphala is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae.This species is endemic to Japan...
- Euhadra sadoensisEuhadra sadoensisEuhadra sadoensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is found in Japan....
- Euhadra sandaiEuhadra sandaiEuhadra sandai is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae....
- Euhadra senckenbergianaEuhadra senckenbergianaEuhadra senckenbergiana is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is found in Japan.The shell of this species is dextral.- Subspecies :...
- Euhadra senckenbergiana aomoriensis (Gulick & Pilsbry, 1900)
- Euhadra senckenbergiana ibukicola
- Euhadra senckenbergiana notoensis
- Euhadra senckenbergiana minoensis
- Euhadra senckenbergiana senckenbergiana
Sinistral species
- Euhadra decorataEuhadra decorataEuhadra decorata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is found in Japan.The shell of this species is sinistral....
- Euhadra grata
- Euhadra grata echigoensis Murayama, Takizawa & Habe, 1991
- Euhadra murayamaiEuhadra murayamaiEuhadra murayamai is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is endemic to Japan.In this species, the gastropod shell is sinistral....
- Euhadra quaesitaEuhadra quaesitaEuhadra quaesita, common name, the "sought-after false hadra, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is found in Japan....
, Sought-after False Hadra - Euhadra scaevola
Further reading
- Ueshima R. & Asami T. (16 October 2003). "Evolution: Single-gene speciation by left–right reversal". Nature 425: 679. doi:10.1038/425679a 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 9784906431250 (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.