Aegista tumida explained

Aegista tumida is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae.^[1]

Subspecies:

• Aegista tumida cavata (Pilsbry, 1902)
• Aegista tumida tumida (Gude, 1901)

Description

The diameter of the shell attains 15.5 mm, its height 13.5 mm.

(Original description) This species differs from the type in several key aspects: it is darker in color, has more tumid whorls, a higher spire, and a wider umbilicus. Additionally, the cuticular lamellae are much less pronounced. One specimen exhibits a pale peripheral band, giving the shell a strong resemblance to Aegista oculus (L. Pfeiffer, 1850).^[2]

Distribution

This snail occurs on Honshu Island, Japan.

References

• Minato, H. (1988). A systematic and bibliographic list of the Japanese land snails. H. Minato, Shirahama, 294 pp., 7 pls.

Notes and References

1. MolluscaBase eds. (2024). MolluscaBase. Aegista tumida (Gude, 1901). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1332098 on 2024-05-23
2. https://www.biodiversitylibrary.org/page/15798139 Gude, G. K. (1901). A third report on helicoid land-shells from Japan and the Loo-Choo Islands. Proceedings of the Malacological Society of London. 4: 191-200