Parakaliella serica is a terrestrial gastropod in the family Chronidae, with its type locality situated in Pyongyang, North Korea. It was first described as a new species by the American malacologist Henry Augustus Pilsbry, based on specimens from the Pyongyang area.
The specific epithet serica is derived from Latin, meaning "silken" or "silk-like." Although it was originally published under the genus Kaliella, the species was later reassigned to the genus Parakaliella following a taxonomic reclassification of East Asian helicarionids, which was prompted by distinct differences in the morphology of their reproductive organs.
Description Overall, it is a minute species of land snail. The shell is conical, widening progressively toward the base from a convex apex.
It consists of 6.5 whorls, featuring a relatively elevated spire. A distinguishing characteristic is the deep sutures between the slightly inflated whorls, which give the whorl profiles a distinct appearance.
The body is dark grayish-brown and possesses the long tail typical of the family Chronidae.
This species is hermaphroditic; fertilized eggs are laid in a single clutch, and development is direct, meaning they hatch as miniature versions of the adults without a larval stage.
Pilsbry noted that juveniles of this species exhibit a more depressed form than the adults.
Habitat According to the South Korean National Institute of Biological Resources (korean:국립생물자원관), this snail is endemic to Korea, with a distribution spanning various regions including Pyeongannam-do, Hwanghae-do, Gangwon-do, Chungcheongbuk-do, Gyeongsangnam-do, and Jeollanam-do. They are typically found beneath leaf litter in moist forests characterized by an abundance of low-lying shrubs, such as azaleas and forsythias.
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External links https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&pageMode=view&ktsn=120000042530