Tropidoptera Explained

Tropidoptera is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae.

Description

(Described as Endodonta (Pterodiscus)) The shell is umbilicated, depressed, thin, or fragile, with a translucent horny-brown coloration.

The whorls are finely and densely striated, with the body whorl sharply keeled at the periphery and distinctly carinated around the umbilicus. The aperture is oblique and toothless, with a thin, simple lip. ^[1]

Distribution

It is endemic to the Hawaiian Islands.

Species

Species within the genus Tropidotera include:

• Tropidoptera alata (L. Pfeiffer, 1856)
• Tropidoptera discus (Pilsbry & Vanatta, 1905)
• Tropidoptera heliciformis (Ancey, 1890)
• Tropidoptera rex (Sykes, 1904)
• Tropidoptera wesleyi (Sykes, 1896)

References

• Book: Cowie, R. H., Evenhuis, N. L. & Christensen, C. C. (. Catalog of the native land and freshwater molluscs of the Hawaiian Islands. vi . 1995 . Backhuys Publishers . Leiden . 1–248.
• Schileyko . A.A. . Treatise on Recent terrestrial pulmonate molluscs. Part 1. Achatinellidae, Amastridae, Orculidae, Strobilopsidae, Spelaeodiscidae, Valloniidae, Cochlicopidae, Pupillidae, Chondrinidae, Pyramidulidae . Ruthenica . 1998 . suppl. 2 . 59.

External links

• Nomenclator Zoologicus info
• Ancey . C.F. . Étude sur la faune malacologique des îles Sandwich . Bulletins de la Société Malacologique de France . 1889 . 6 . 191 . 4 January 2025.
• Pilsbry, H. A. & Vanatta, E. G. . Notes on some Hawaiian Achatinellidae and Endodontidae. . Proceedings of the Academy of Natural Sciences of Philadelphia . 1905 . 57 . 570-571 . 4 January 2025.

Notes and References

1. Book: Pilsbry . H.A. . Manual of conchology, structural and systematic, with illustrations of the species. Ser. 2, Pulmonata. Vol. 9: Helicidae, Vol. 7, Guide to the study of Helices . 1893–1895 . Conchological Section, Academy of Natural Sciences. . Philadelphia . 36 .