List of near threatened molluscs
- : 13 species
- Critically endangered (CR): 581 species
- Endangered (EN): 507 species
- Vulnerable (VU): 879 species
- Near threatened (NT, LR/cd): 535 species
- Least concern (LC): 2,437 species
- Data deficient (DD): 1,988 species
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)]
- ^ excludes data deficient evaluations.
- ^ NT, LR/cd, LC.
- ^ Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
- ^ 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.
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.
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.
Zonitids[]
Clausiliids[]
Species
Subspecies
Helminthoglyptids[]
- Morongo desert snail (Eremarionta morongoana)
- Victorville shoulderband (Helminthoglypta mohaveana)
- Sonorella allynsmithi
- Sonorella christenseni
- San Xavier talus snail (Sonorella eremita)
- Sonorella grahamensis
- Sonorella macrophallus
- Franklin Mountain talus snail (Sonorella metcalfi)
- Sonorella todseni
Camaenids[]
Species
- Amphidromus cognatus
- Amplirhagada montalivetensis
- Barrington tops bristle snail (Austrochloritis ascensa)
- Baudinella baudinensis
- Macleay's single-banded snail (Bentosites macleayi)
- Cooperconcha centralis
- Cristilabrum spectaculum
- Cupedora broughami
- Cupedora luteofusca
- Cupedora marcidum
- Cupedora sutilosa
- Cupedora tomsetti
- (Forrestena delicata)
- Glyptorhagada janaslini
- Granulomelon grandituberculatum
- Atherton tableland keeled snail (Jacksonena rudis)
- Lacustrelix minor
- Lacustrelix yerelinana
- Mossman gorge treesnail (Meliobba shafferyi)
- Hacking river forest snail (Meridolum marshalli)
- Mesodontrachia fitzroyana
- Ordtrachia australis
- Ordtrachia septentrionalis
- Mottled treesnail (Papuexul bidwilli)
- Emerald green snail (Papustyla pulcherrima)
- Pleuroxia italowiana
- Border Ranges treesnail (Posorites turneri)
- (Protolinitis pusilla)
- Semotrachia winneckeana
- Rockhampton banded snail (Sphaerospira rockhamptonensis)
- Temporena whartoni
- Torresitrachia funium
Subspecies
Vertiginids[]
- Alabama vertigo (Vertigo alabamensis)
- Narrow-mouthed whorl snail (Vertigo angustior)
- Vertigo arctica
- Vertigo arthuri
- Vertigo hebardi
- Vertigo hubricti
- Vertigo lilljeborgi
- Vertigo occulta
- Vertigo ovata
- Vertigo ultimathule
Cochlicellids[]
Trissexodontids[]
Helicids[]
- Chilostoma achates
- Chilostoma acrotricha
- Chilostoma ambrosi
- Chilostoma ziegleri
- Faustina rossmaessleri
- Iberus alonensis
Hygromiids[]
Species
- Actinella anaglyptica
- Candidula castriota
- Candidula cavannae
- Candidula ultima
- Discula cheiranthicola
- Helicella orzai
- Helicopsis conopsis
- Hystricella bicarinata
- Hystricella oxytropis
- Lemniscia michaudi
- Monachoides kosovoensis
- Montserratina bofilliana
- Petasina subtecta
- Plentuisa vendia
- Trochoidea cumiae
- Trochoidea liebetruti
- Trochulus ataxiacus
- Trochulus caelatus
- Trochulus graminicola
- Trochulus oreinos
- Xerocrassa cisternasi
- Xerocrassa ebusitana
- Xerocrassa ferreri
- Xerocrassa jimenensis
- Xerocrassa molinae
- Xerocrassa nyeli
- Xerocrassa prietoi
- Xerocrassa turolensis
- Xerotricha zaratei
Subspecies
Vitrinids[]
Chondrinids[]
- Abida gittenbergeri
- Abida vergniesiana
- Insular birddrop (Sterkia clementina)
Enids[]
Argnids[]
Other Stylommatophora species[]
- Allocharopa okeana
- Allocharopa tarravillensis
- Granulated Tasmanian snail (Anoglypta launcestonensis)
- Franklin Mountain woodland snail (Ashmunella pasonis)
- Beckianum sinistrum
- Sandbowl snail (Catinella arenaria)
- Craterodiscus pricei
- Gonospira bourguignati
- Gyliotrachela catherina
- Helicodiscus diadema
- Helicodiscus hexodon
- Leiostyla degenerata
- Leiostyla relevata
- Leptinaria strebeliana
- Malacolimax wiktori
- Orcula pseudodolium
- Oxychilus basajauna
- Papilloderma altonagai
- Kauri snail (Paryphanta busbyi)
- Pillomena aemula
- Polygyra hippocrepis
- Strange many-whorled land snail (Polygyra peregrina)
- Powelliphanta marchantii
- Pupilla ficulnea
- Pupisoma sp. 1
- Setomedea nudicostata
- Soosia diodonta
- Plaited snail (Spermodea lamellata)
- Succinea sanctaehelenae
- Keeled snail (Tasmaphena lamproides)
- Vallonia declivis
- Victaphanta atramentaria
Littorinimorpha[]
There are 115 species in the order Littorinimorpha assessed as near threatened.
Hydrobiids[]
- Alzoniella hartwigschuetti
- Austropyrgus colensis
- Austropyrgus foris
- Austropyrgus grampianensis
- Austropyrgus nepeanensis
- Avenionia roberti
- Bythinella badensis
- Bythiospeum alpinum
- Bythiospeum diaphanum
- Fissuria boui
- Fluviopupa gracilis
- Fluviopupa ramsayi
- Fonscochlea zeidleri
- Greenbrier cavesnail (Fontigens turritella)
- Hemistomia gemma
- Nanocochlea parva
- Pachydrobiella brevis
- Potamopyrgus oscitans
- (Pyrgulopsis pilsbryana)
- Huachuca springsnail (Pyrgulopsis thompsoni)
- Savannah pebblesnail (Somatogyrus tenax)
- Victodrobia victoriensis
Bithyniids[]
Moitessieriids[]
- Paladilhia hungarica
Assimineids[]
Pomatiopsids[]
Stenothyrids[]
Sorbeoconcha[]
- Bridouxia ponsonbyi
- Bridouxia praeclara
- Cleopatra grandidieri
- (Elimia arachnoidea)
- (Elimia caelatura)
- Slowwater elimia (Elimia interveniens)
- (Elimia plicatastriata)
- (Elimia striatula)
- Squat elimia (Elimia variata)
- (Juga acutifilosa)
- Lavigeria coronata
- Geniculate river snail (Lithasia geniculata)
- Madagasikara madagascariensis
- Melanatria fluminea
- Melanoides admirabilis
- Melanoides polymorpha
- Melanoides pupiformis
- Melanoides turritispira
- (Pleurocera gradata)
- Skirted hornsnail (Pleurocera pyrenella)
- Tanganyicia rufofilosa
Architaenioglossa[]
There are 41 species in the order Architaenioglossa assessed as near threatened.
Pupinids[]
Diplommatinids[]
- Cochlostoma euboicum
- Cochlostoma pageti
- Cochlostoma parnonis
- Diplommatina lamellata
- Diplommatina lutea
- Palaina dimorpha
Aciculids[]
- Acicula hausdorfi
- Platyla orthostoma
- Renea moutonii
Viviparids[]
- Bellamya costulata
- Bellamya jucunda
- Bellamya monardi
- Bellamya rubicunda
Ampullariids[]
Craspedopomatids[]
Lower Heterobranchia species[]
Cycloneritimorpha[]
- Neritina natalensis
- Neritina rubricata
- Theodoxus anatolicus
Hygrophila species[]
- Biomphalaria smithi
- Bulinus cernicus
- Bulinus hightoni
- Bulinus octaploidus
- Burnupia crassistriata
- Burnupia stuhlmanni
- Mud snail (Omphiscola glabra)
- Stimulator consetti
Neogastropoda[]
There are 29 species in the order Neogastropoda assessed as near threatened.
Buccinids[]
- Ranella olearia
- Ranella parthenopaeum
Muricids[]
- Latiaxis babelis
Conids[]
- Conus atlanticoselvagem
- Golden cone (Conus aurantius)
- Conus boschorum
- Conus cardinalis
- Conus curassaviensis
- Conus curralensis
- Conus denizi
- Conus derrubado
- Conus diminutus
- Conus dorotheae
- Conus evorai
- Conus explorator
- Conus gauguini
- Conus josephinae
- Conus kersteni
- Kirk Ander's cone (Conus kirkandersi)
- Conus luquei
- Conus navarroi
- Conus nielsenae
- Conus nobrei
- Conus saragasae
- Conus taslei
- Conus terryni
- Conus trencarti
- Conus trochulus
- Conus zebroides
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
- Actinonaias pectorosa
- Rayed creekshell (Anodontoides radiatus)
- Cyclonaias tuberculata
- Ellipsaria lineolata
- Elliptio ahenea
- Elliptio congaraea
- Elliptio dariensis
- Yellow lance (Elliptio lanceolata)
- Fluted elephantear (Elliptio mcmichaeli)
- Altamaha lance (Elliptio shepardiana)
- Fusconaia askewi
- Tapered pigtoe (Fusconaia burkei)
- (Hamiota australis)
- Lampsilis bracteata
- Lampsilis cardium
- Waccamaw fatmucket (Lampsilis fullerkati)
- Lampsilis ovata
- Orangenacre mucket (Lampsilis perovalis)
- Lampsilis satura
- Scale shell (Leptodea leptodon)
- Tidewater mucket (Leptodea ochracea)
- Ligumia nasuta
- Medionidus conradicus
- Obovaria subrotunda
- Obovaria unicolor
- Ohio pigtoe (Pleurobema cordatum)
- Pleurobema riddellii
- Pyramid pigtoe (Pleurobema rubrum)
- Ptychobranchus occidentalis
- Ptychobranchus subtentum
- Inflated floater (Pyganodon gibbosa)
- Rabbitsfoot (Quadrula cylindrica)
- Salamander mussel (Simpsonaias ambigua)
- Alabama creekmussel (Strophitus connasaugaensis)
- Strophitus subvexus
- Unio delphinus
- Unio mancus
- Choctaw bean (Villosa choctawensis)
Subspecies
Hyriids[]
- (Hyridella narracanensis)
- (Velesunio moretonicus)
Cardiida[]
- Bear paw clam (Hippopus hippopus)
- China clam (Hippopus porcellanus)
- Maxima clam (Tridacna maxima)
- Fluted giant clam (Tridacna squamosa)
Venerida[]
- Sphaerium solidum
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
References[]
- ^ "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.
Categories:
- IUCN Red List near threatened species
- Lists of animals by conservation status
- Lists of molluscs