Biology:List of near threatened molluscs

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Near threatened (NT) species do not currently qualify for critically endangered (CR), endangered (EN) or vulnerable (VU) status, but are likely to qualify for a threatened category in the near future, or are already close to qualifying.

In September 2016, the International Union for Conservation of Nature (IUCN) listed 535 near threatened mollusc species. Of all evaluated mollusc species, 7.4% are listed as near threatened. The IUCN also lists nine mollusc subspecies as near threatened.

No subpopulations of molluscs have been evaluated by the IUCN.

This is a complete list of near threatened mollusc species and subspecies evaluated by the IUCN.

Gastropods

There are 477 species and four subspecies of gastropod assessed as near threatened.

Stylommatophora

Stylommatophora includes the majority of land snails and slugs. There are 250 species and four subspecies in the order Stylommatophora assessed as near threatened.

Clausiliids

Species

Subspecies

• Alopia bielzii clathrata
• Macrogastra lineolata euzieriana

Camaenids

Species

Subspecies

• Glyptorhagada wilkawillina umbilicata

Hygromiids

Species

Subspecies

• Xerocrassa montserratensis betulonensis

Littorinimorpha

There are 115 species in the order Littorinimorpha assessed as near threatened.

Assimineids

• Omphalotropis circumlineata
• Omphalotropis zelriolata

Stenothyrids

• Stenothyra khongi
• Stenothyra wykoffi

Architaenioglossa

There are 41 species in the order Architaenioglossa assessed as near threatened.

Pupinids

• Pupina coxeni
• Pupina pfeifferi

Craspedopomatids

• Craspedopoma hespericum
• Craspedopoma monizianum

Lower Heterobranchia species

• Valvata rhabdota
• Valvata stenotrema

Neogastropoda

There are 29 species in the order Neogastropoda assessed as near threatened.

Buccinids

• Ranella olearia
• Ranella parthenopaeum

Muricids

• Latiaxis babelis

Bivalvia

There are 57 species and five subspecies in the class Bivalvia assessed as near threatened.

Unionida

There are 49 species and five subspecies in the order Unionoida assessed as near threatened.

Unionids

Species

Subspecies

Hyriids

• Southern river mussel (Hyridella narracanensis)
• South Esk freshwater mussel (Velesunio moretonicus)

Cephalopods

• Giant Australian cuttlefish (Sepia apama)

See also

• Lists of IUCN Red List near threatened species
• List of least concern molluscs
• List of vulnerable molluscs
• List of endangered molluscs
• List of critically endangered molluscs
• List of recently extinct molluscs
• List of data deficient molluscs