List of GASTROPODA species in St. Helena



This is a list of GASTROPODA in St. Helena according to the IUCN Red List.

This list was last updated 2019-09-14

 

This list contains only species that have been assessed for the IUCN Red List. It is therefore not representative of all the species in the country.

Species counts by country: Total | Amphibians | Birds | Fish | Mammals | Reptiles | Vascular Plants.

scientific_namecommon_nametaxonidcategory
Chilonopsis blofeldi 4635 EX
Chilonopsis exulatus 4636 EX
Chilonopsis helena 4637 EX
Chilonopsis melanoides 4638 EX
Chilonopsis nonpareil Great Saint Helena Awl Snail 4639 EX
Chilonopsis subplicatus 4640 EX
Chilonopsis subtruncatus 4641 EX
Chilonopsis turtoni 4642 EX
Helenoconcha relicta Ammonite snail 9764 CR
Helenoconcha leptalea 9765 EX
Helenoconcha minutissima 9766 EX
Helenoconcha polyodon 9767 EX
Helenoconcha pseustes 9768 EX
Helenoconcha sexdentata 9769 EX
Helenodiscus bilamellata 9770 EX
Helenodiscus vernoni Wollaston’s Saint Helena Discus Snail 9771 EX
Campolaemus perexilis 3714 EX
Succinea sanctaehelenae 21132 LR/nt
Conus jourdani 192854 DD
Nesopupa turtoni 14681 EX
Pseudohelenoconcha spurca 29614 EX
Pupilla obliquicosta 18912 EX

 

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Species are classified by the IUCN Red List into nine groups:
  • Extinct (EX) – beyond reasonable doubt that the species is no longer extant.
  • Extinct in the wild (EW) – survives only in captivity, cultivation and/or outside native range, as presumed after exhaustive surveys.
  • Critically endangered (CR) – in a particularly and extremely critical state.
  • Endangered (EN) – very high risk of extinction in the wild, meets any of criteria A to E for Endangered.
  • Vulnerable (VU) – meets one of the 5 red list criteria and thus considered to be at high risk of unnatural (human-caused) extinction without further human intervention.
  • Near threatened (NT) – close to being at high risk of extinction in the near future.
  • Least concern (LC) – unlikely to become extinct in the near future.
  • Data deficient (DD)
  • Not evaluated (NE)