Euhadra
Euhadra is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Bradybaeninae of the family Camaenidae.
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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
These snails are almost endemic to Japan, but one of them are distributed in Korea.Species
Most species in this genus have a dextral shell and 5 species are sinistral.Dextral species
Dextral species in the genus Euhadra include:Euhadra amaliae Euhadra awaensis Euhadra brandtii Euhadra callizona Euhadra caspari Euhadra cecillei Euhadra congenita Euhadra cyclolabris Möllendorff, 1899Euhadra dixoni Euhadra eoa Euhadra granulifera Euhadra herklotsi Euhadra idzumonis Euhadra kunoensis Kuroda in Masuda & Habe, 1989Euhadra latispira- * Euhadra latispira yagurai Kuroda & Habe, 1949 Euhadra luhuana Euhadra moreletiana Euhadra nachicola Kuroda, 1929Euhadra nesiotica
- † Euhadra pachya Euhadra peliomphala Euhadra sadoensis Euhadra sandai Euhadra schmackeri Euhadra senckenbergiana
- * Euhadra senckenbergiana aomoriensis
- * Euhadra senckenbergiana ibukicola
- * Euhadra senckenbergiana notoensis
- * Euhadra senckenbergiana minoensis
- * Euhadra senckenbergiana senckenbergianaEuhadra sigeonis Kuroda, 1944Euhadra subnimbosa
- † Euhadra takarajimana M. Azuma & Y. Azuma, 1985 Euhadra tokarainsula Minato & Habe, 1982
- ''Euhadra yakushimana''
Sinistral species
Sinistral species in the genus Euhadra include:Euhadra decorata Euhadra grata- * Euhadra grata echigoensis Murayama, Takizawa & Habe, 1991Euhadra murayamai Habe, 1976Euhadra quaesita, Sought-after False HadraEuhadra scaevola