Caseolus calvus explained

Caseolus calvus is a species of small air-breathing land snail, terrestrial pulmonate gastropod mollusks in the family Geomitridae, the hairy snails and their allies.

Subspecies

• Caseolus calvus calvus (R. T. Lowe, 1831)
• Caseolus calvus galeatus (R. T. Lowe, 1862)

The subspecies Caseolus calvus galeatus (R. T. Lowe, 1862) endemic to Madeira is globally extinct.^[1]

Distribution

This species of land snail lives in Madeira, Portugal.

Notes and References

1. Fontaine B., Bouchet P., Van Achterberg K., Alonso-Zarazaga M. A., Araujo R. et al. (2007). "The European union’s 2010 target: Putting rare species in focus." Biological Conservation 139: 167-185. Table 2 on the page 173. . PDF.