Melania libertina Gould, 1859 Melanoides libertinus Semisulcospira toucheana Semisulcospira libertina is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Semisulcospiridae.

Widespread in east Asia, it lives in China, Taiwan, Korea, Japan, and the Philippines.

The type specimens were collected by American scientist William Stimpson during the North Pacific Exploring and Surveying Expedition (1853–1856).

[3] This species was originally described under the name Melania libertina by American malacologist Augustus Addison Gould in 1859.

Kuroda (1963)[5] and Habe (1965)[6] considered S libertina a synonym of Semisulcospira bensoni.

)[7] Miura et al. (2013)[12] studied mitochondrial haplotypes of Semisulcospira libertina from Korea and from Japan.

[12] Shells of Semisulcospira libertina were also found in the Nojiri-ko Formation at the Lake Nojiri in Central Japan from the age of 27,000 years BP.

[14] The reproductive system in a male has the following parts: testis, vas deferens, the spermatophore organ.

[22] The reproductive system in a female has the following parts: ovary, the pallial oviduct, the spermatophore bursa, the seminal receptacle and the brood pouch.

[7] Habitats of Semisulcospira libertina include pools, slow flowing rivers, drainage ditches, rice paddies,[7] streams.

[30] Chemoautotrophic bacteria are probable food source of Semisulcospira libertina, because δ13C and δ34S values were lower than in other invertebrates on the site.

[30] Semisulcospira libertina is gonochoristic, which means that each individual animal is distinctly male or female.

Some of them are medically important: Shinagawa et al. (2001) studied the metabolism and activity of Semisulcospira libertina infected by trematodes.

[43] Bacteria Neorickettsia risticii was detected in cercaria from Semisulcospira libertina in Korea.

In Korean cuisine, daseulgi-guk (다슬기국) is a type of guk (soup) made with Semisulcospira libertina.

[49] Juice, panbroiled, powder, and simmer from the whole Semisulcospira libertina is used for cure of gastroenteric trouble in Jirisan National Park, Korea.

[49] Simmer from the whole Semisulcospira libertina is used for cure of indigestion in Jirisan National Park.

[49] Semisulcospira libertina is also used as clear soup with flour dumplings, infusion, juice, soup or as simmer for cure liver-related ailments in traditional medicine in the Southern Regions of Korea.

[50] The non-intentional exposure to shell powder from this species caused the first reported silicosis of such origin in 2012.