List of near threatened molluscs

Summary

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 535 near threatened mollusc species.[1] 7.4% of all evaluated mollusc species are listed as near threatened. The IUCN also lists nine mollusc subspecies as near threatened.

14 extinct in the wild mollusc species (0.20%)581 critically endangered mollusc species (8.4%)507 endangered mollusc species (7.3%)879 vulnerable mollusc species (13%)535 near threatened mollusc species (7.7%)2437 least concern mollusc species (35%)1988 data deficient mollusc species (29%)Circle frame.svg
Mollusc species (IUCN, 2020.1)
  • 6941 extant species have been evaluated
  • 4953 of those are fully assessed[a]
  • 2972 are not threatened at present[b]
  • 1967 to 3955 are threatened[c]
  • 324 to 441 are extinct or extinct in the wild:
    • 311 extinct (EX) species[d]
    • 13 extinct in the wild (EW)
    • 117 possibly extinct [CR(PE)]
    • 0 possibly extinct in the wild [CR(PEW)]

  1. ^ excludes data deficient evaluations.
  2. ^ NT, LR/cd, LC.
  3. ^ Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
  4. ^ Chart omits extinct (EX) species
Near Threatened (NT) species do not currently qualify for Critically Endangered (CR), Endangered (EN) or Vulnerable (VU), but are likely to qualify for a threatened category in the near future, or are already close to qualifying.

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.

GastropodsEdit

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

StylommatophoraEdit

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

ZonitidsEdit

ClausiliidsEdit

Species

Subspecies

  • Alopia bielzii clathrata
  • Macrogastra lineolata euzieriana

HelminthoglyptidsEdit

CamaenidsEdit

Species

Subspecies

  • Glyptorhagada wilkawillina umbilicata

VertiginidsEdit

CochlicellidsEdit

  • Monilearia montigena
  • Monilearia multipunctata
  • Monilearia phalerata
  • Monilearia tubaeformis
  • Ripkeniella petrophila

TrissexodontidsEdit

HelicidsEdit

  • Allognathus pyrenaicus
  • Arianta hessei
  • Arianta schmidtii
  • Arianta stenzii
  • Cattania ardica
  • Cattania maranajensis
  • Cattania petrovici
  • Chilostoma achates
  • Chilostoma acrotricha
  • Chilostoma ambrosi
  • Chilostoma crinita
  • Chilostoma denudata
  • Chilostoma euboeae
  • Chilostoma fuchsi
  • Chilostoma pentheri
  • Chilostoma sztolcmani
  • Chilostoma zebiana
  • Chilostoma ziegleri
  • Faustina rossmaessleri
  • Hemicycla bethencourtiana
  • Hemicycla diegoi
  • Hemicycla glyceia
  • Hemicycla incisogranulata
  • Hemicycla laurijona
  • Hemicycla quadricincta
  • Hemicycla saponacea
  • Iberus alonensis
  • Iberus carthaginiensis
  • Marmorana saxetana
  • Marmorana signata
  • Superba grisea
  • Superba kulmakana
  • Superba reischuetzi
  • Theba clausoinflata

HygromiidsEdit

Species

Subspecies

  • Xerocrassa montserratensis betulonensis

VitrinidsEdit

  • Oligolimax apatelus
  • Phenacolimax major
  • Plutonia canariensis
  • Plutonia christinae
  • Plutonia cuticula
  • Plutonia emmersoni
  • Plutonia mascaensis
  • Plutonia parryi
  • Plutonia tuberculata
  • Vitrinobrachium baccettii

ChondrinidsEdit

EnidsEdit

  • Chondrula lugorensis
  • Euchondrus limbodentatus
  • Mastus emarginatus
  • Napaeus avaloensis
  • Napaeus beguirae
  • Napaeus consecoanus
  • Napaeus huttereri
  • Napaeus maculatus
  • Napaeus orientalis
  • Napaeus procerus
  • Napaeus tafadaensis
  • Napaeus voggenreiteri
  • Peristoma merduenianum
  • Peristoma rupestre
  • Rhabdoena mirifica
  • Rhabdoena stokesi
  • Rhabdoena zasiensis
  • Turanena carpathia
  • Turanena katerinae

ArgnidsEdit

  • Agardhiella banatica
  • Agardhiella crassilabris
  • Agardhiella dabovici
  • Agardhiella grossui
  • Agardhiella langaleta
  • Agardhiella pirotana
  • Agardhiella reinhardti
  • Agardhiella serbica

Other Stylommatophora speciesEdit

LittorinimorphaEdit

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

HydrobiidsEdit

BithyniidsEdit

MoitessieriidsEdit

  • Moitessieria heideae
  • Moitessieria olleri
  • Paladilhia hungarica
  • Sardopaladilhia plagigeyerica
  • Spiralix vitrea

AssimineidsEdit

  • Omphalotropis circumlineata
  • Omphalotropis zelriolata

PomatiopsidsEdit

  • Halewisia conica
  • Hubendickia gochenouri
  • Hubendickia microsculpta
  • Hubendickia polita
  • Hubendickia rolfbrandti
  • Hubendickia schlickumi
  • Hubendickia schuetti
  • Hubendickia subulata
  • Hubendickia tuberculata
  • Hubendickia turneri
  • Karelainia hydrorissoidea
  • Lacunopsis coronata
  • Lacunopsis fischerpiettei
  • Lacunopsis massiei
  • Pachydrobia harmandi
  • Pachydrobia incerta
  • Robertsiella kaporensis
  • Tomichia rogersi

StenothyridsEdit

  • Stenothyra khongi
  • Stenothyra wykoffi

SorbeoconchaEdit

ArchitaenioglossaEdit

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

PupinidsEdit

DiplommatinidsEdit

AciculidsEdit

ViviparidsEdit

AmpullariidsEdit

CraspedopomatidsEdit

Lower Heterobranchia speciesEdit

  • Valvata rhabdota
  • Valvata stenotrema

CycloneritimorphaEdit

Hygrophila speciesEdit

NeogastropodaEdit

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

BuccinidsEdit

MuricidsEdit

ConidsEdit

BivalviaEdit

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

UnionidaEdit

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

UnionidsEdit

Species

Subspecies

  • Lampsilis reeviana brevicula
  • Lampsilis straminea claibornensis
  • Lampsilis straminea straminea
  • Lasmigona complanata alabamensis
  • Quadrula cylindrica cylindrica

HyriidsEdit

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

CardiidaEdit

VeneridaEdit

CephalopodsEdit

See alsoEdit

ReferencesEdit

  1. ^ "IUCN Red List version 2016-2". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 8 September 2016.