Genus of gastropods
Euhadra genus of air-breathingland snails ,terrestrial pulmonate gastropod mollusks in the subfamilyBradybaeninae of the familyCamaenidae .[ 2]
(This snail genus was previously placed in the familyEulotidae ).
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.
These snails are almost endemic toJapan , but one of them are distributed inKorea .
Most species in this genus have adextral shell and 5 species are sinistral.[ 3]
Dextral species in the genusEuhadra include:
Euhadra amaliae (Kobelt, 1875) Euhadra awaensis (Pilsbry, 1902) Euhadra brandtii (Kobelt, 1875) Euhadra callizona (Crosse, 1871) Euhadra caspari (Möllendorff, 1884) Euhadra cecillei (Philippi, 1849) Euhadra congenita (E. A. Smith, 1878) Euhadra cyclolabris Möllendorff, 1899 Euhadra dixoni Pilsbry, 1900) Euhadra eoa (Crosse, 1868) Euhadra granulifera (Möllendorff, 1888) Euhadra herklotsi (Martens, 1861) Euhadra idzumonis (Pilsbry & Gulick, 1900) Euhadra kunoensis Kuroda in Masuda & Habe, 1989 Euhadra latispira (Pilsbry & Hirase, 1909) Euhadra luhuana (G. B. Sowerby I, 1839) Euhadra moreletiana (Heude, 1882) Euhadra nachicola Kuroda, 1929 Euhadra nesiotica (Pilsbry, 1902) †Euhadra pachya (Pilsbry, 1902 ) Euhadra peliomphala (L. Pfeiffer, 1850) Euhadra sadoensis (Pilsbry & Y. Hirase, 1903) Euhadra sandai (Kobelt, 1879) Euhadra schmackeri (Möllendorff, 1888) Euhadra senckenbergiana (Kobelt, 1875) Euhadra sigeonis Kuroda, 1944 Euhadra subnimbosa (Kobelt, 1894) †Euhadra takarajimana M. Azuma & Y. Azuma, 1985 Euhadra tokarainsula Minato & Habe, 1982 Euhadra yakushimana (Pilsbry & Hirase, 1903) Euhadra murayamai Sinistral species in the genusEuhadra include:
Species brought into synonymy Euhadra amphidroma Möllendorff, 1899 : synonym ofTrichocathaica amphidroma (Möllendorff, 1899) (original combination)Euhadra carphochroa Möllendorff, 1899 : synonym ofBradybaena carphochroa (Möllendorff, 1899) (original combination)Euhadra eris Möllendorff, 1899 : synonym ofBradybaena eris (Möllendorff, 1899) (original combination)Euhadra halpozona Möllendorff, 1899 : synonym ofBradybaena halpozona (Möllendorff, 1899) (original combination)Euhadra hickonis Kobelt, 1879 : synonym ofEuhadra congenita (E. A. Smith, 1878) (junior synonym)Euhadra iwadensis Toba & Kuroda, 1936 : synonym ofEuhadra decorata decorata (Pilsbry & Hirase, 1903) (junior synonym)Euhadra kanmuriensis Azuma & Tada, 1969 : synonym ofEuhadra sandai communis Pilsbry, 1928 (junior synonym)Euhadra kanoi Kuroda, 1932 : synonym ofNesiohelix kanoi (Kuroda, 1932) (original combination)Euhadra koreana (L. Pfeiffer, 1850) : synonym ofFruticicola koreana (L. Pfeiffer, 1850) Euhadra micromphala Möllendorff, 1899 : synonym ofBradybaena micromphala (Möllendorff, 1899) (original combination)Euhadra pekanensis H. Rolle, 1911 : synonym ofSatsuma pekanensis (H. Rolle, 1911) (original combination)Euhadra pseudocampylaea Möllendorff, 1899 : synonym ofBradybaena pseudocampylaea (Möllendorff, 1899) (original combination)Euhadra pseudopapuina Möllendorff, 1901 : synonym ofAegista pseudopapuina (Möllendorff, 1901) (original combination)Euhadra strauchiana Möllendorff, 1899 : synonym ofBradybaena strauchiana (Möllendorff, 1899) (original combination)Euhadra strictotaenia Möllendorff, 1899 : synonym ofBradybaena strictotaenia (Möllendorff, 1899) (original combination)Euhadra tenuitesta Möllendorff, 1899 : synonym ofBradybaena tenuitesta (Möllendorff, 1899 ) (original combination)Euhadra tobai S. Hirase, 1929 : synonym ofEuhadra decorata decorata (Pilsbry & Hirase, 1903) (junior synonym)Euhadra tokarana Azuma, 1982 : synonym ofEuhadra tokarainsula tokarainsula Minato & Habe, 1982 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 ofEuhadra ,Cepaea andAlbinaria 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
