page_title: Helicina rhodostoma
section_title: Shell description
hierarchical_section_title: Helicina rhodostoma / Shell description
caption_attribution_description: English: Photo of an apertural view of the shell of Helicina rhodostoma. The height of the shell is 9.24 mm.
context_page_description: Helicina rhodostoma is a species of tropical land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae.
context_section_description: Robert John Lechmere Guppy (1868) noted that this species is not found above 1000 m altitude. Three names have been used for this species, but material by Robinson et al. (2009) shows that the forms intergrade, illustrating the variability of the species. In general, populations from higher altitudes have a more pronounced columellar spine, and are more likely to have a red to reddish-orange aperture, as seen in typical Helicina rhodostoma. Populations from drier, coastal areas tend to lack a columellar spine, and the aperture may be white or yellow. Juvenile specimens of this species often have a hairy periostracum, which is gradually worn off as the snail reaches sexual maturity.
caption: An apertural view of the shell of Helicina rhodostoma. The height of the shell is 9.24 mm. This shell shows the columellar spine.
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