Megalophaedusa spelaeonis, in Japanese: , is a species of small, air-breathing land snail, terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails, all of which have a clausilium.MolluscaBase eds. (2022). MolluscaBase. Megalophaedusa spelaeonis (Kuroda & Minato, 1975). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1334143 on 2022-07-03
Description The height of the shell is 10–11 mm. The width of the shell is 2.5–3 mm.
Distribution This species is endemic to central part of Kumamoto Prefecture, Kyushu, Japan. カザアナギセル Neophaedusa spelaeonis. Japanese Red data book, accessed 1 August 2010.
It is endangered species (CR+EN) in Japan.
Ecology It lives in limestone caves.
References
Kuroda, T. & Minato, H. (1975). Description of a New Genus and Two New Species of Clausiliidae from Lime-stone Caves in Japan. Venus (Japanese Journal of Malacology). 34(1-2): 1-10.
Further reading 浜田 善利 (1967). "錘乳洞内のキセルガイ : イシカワギセルとカザアナギセル:". ちりぼたん 4(8): 133-136. CiNii. 黒田徳米 & 湊 宏 (1975). "石灰岩洞窟産キセルガイの1新属2新種". Venus 34'(1-2): 1-3. Malacological Society of Japan, Tokyo.
External links http://shell.kwansei.ac.jp/~shell/pic_book/data48/r004707.html http://www.biodic.go.jp/rdb_fts/before/506.html