List of near threatened molluscs
# List of near threatened molluscs

* Extinct in the wild (EW): 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
* 6941 extant species have been evaluated
* 4953 of those are fully assessed
* 2972 are not threatened at present
* 1967 to 3955 are threatened
* 324 to 441 are extinct or extinct in the wild:
   * 311 extinct (EX) species
   * 13 extinct in the wild (EW)
   * 117 possibly extinct [CR(PE)]
   * 0 possibly extinct in the wild [CR(PEW)]

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.

**Zonitids**

* Paravitrea clappi
* Trochomorpha corallina
* Trochomorpha fessonia
* Trochomorpha luedersi
* Trochomorpha melvillensis
* Zonites anaphiensis

**Clausiliids**

Species

* Boettgeria crispa
* Charpentieria dyodon
* Muticaria macrostoma

Subspecies

* Alopia bielzii clathrata
* Macrogastra lineolata euzieriana

**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
* Dirutrachia sublevata
* Mount lewis keeled snail (Forrestena delicata)
* Glyptorhagada janaslini
* Granulomelon arcigerens
* Granulomelon grandituberculatum
* Granulomelon squamulosum
* 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)
* Tinaroo red-striped snail (Protolinitis pusilla)
* Semotrachia winneckeana
* Rockhampton banded snail (Sphaerospira rockhamptonensis)
* Temporena whartoni
* Torresitrachia funium
* Trachiopsis victoriana
* Vincentrachia desmonda

Subspecies

* Glyptorhagada wilkawillina umbilicata

**Vertiginids**

* Montapiculus pyramidalis
* Truncatellina opisthodon
* Truncatellina velkovrhi
* 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**

* Monilearia montigena
* Monilearia multipunctata
* Monilearia phalerata
* Monilearia tubaeformis
* Ripkeniella petrophila

**Trissexodontids**

* Gasullia gasulli
* Gittenbergeria turriplana
* Hatumia zapateri
* Mastigophallus rangianus
* Oestophora ebria
* Oestophora ortizi
* Oestophora prietoi
* Suboestophora tarraconensis

**Helicids**

* 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

**Hygromiids**

Species

* Actinella anaglyptica
* Canariella discobolus
* Canariella squamata
* Canariella tillieri
* Candidula castriota
* Candidula cavannae
* Candidula ultima
* Cernuella hydrutina
* Cernuella lampedusae
* Discula attrita
* Discula cheiranthicola
* Disculella compar
* Helicella orzai
* Helicopsis conopsis
* Hystricella bicarinata
* Hystricella oxytropis
* Lemniscia michaudi
* Monacha consona
* Monacha gregaria
* Monacha orsinii
* Monacha oshanovae
* Monacha ovularis
* Monacha venusta
* Monachoides kosovoensis
* Montserratina bofilliana
* Petasina subtecta
* Plentuisa vendia
* Pyrenaearia carascalopsis
* Schileykiella parlatoris
* Schileykiella reinae
* Thyrreniellina josephi
* Trochoidea cumiae
* Trochoidea liebetruti
* Trochulus ataxiacus
* Trochulus caelatus
* Trochulus graminicola
* Trochulus oreinos
* Urticicola mounierensis
* Xerocrassa cisternasi
* Xerocrassa ebusitana
* Xerocrassa ferreri
* Xerocrassa jimenensis
* Xerocrassa molinae
* Xerocrassa nyeli
* Xerocrassa prietoi
* Xerocrassa turolensis
* Xerolenta depulsa
* Xerotricha huidobroi
* Xerotricha zaratei

Subspecies

* Xerocrassa montserratensis betulonensis

**Vitrinids**

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

**Chondrinids**

* Abida gittenbergeri
* Abida vergniesiana
* Chondrina altimirai
* Chondrina arigonis
* Chondrina bergomensis
* Chondrina falkneri
* Chondrina granatensis
* Chondrina ripkeni
* Rupestrella rupestris
* Insular birddrop (Sterkia clementina)

**Enids**

* 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

**Argnids**

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

**Other Stylommatophora species**

* Allocharopa okeana
* Allocharopa tarravillensis
* Granulated Tasmanian snail (Anoglypta launcestonensis)
* Franklin Mountain woodland snail (Ashmunella pasonis)
* Atlantica scutula
* Beckianum sinistrum
* Sandbowl snail (Catinella arenaria)
* Craterodiscus pricei
* Deroceras vascoanum
* Drepanostoma nautiliforme
* Gonospira bourguignati
* Gyliotrachela catherina
* Helicodiscus diadema
* Helicodiscus hexodon
* Leiostyla calathiscus
* Leiostyla degenerata
* Leiostyla relevata
* Leptinaria strebeliana
* Malacolimax wiktori
* Orcula pseudodolium
* Orcula wagneri
* Orculella templorum
* Oxychilus basajauna
* Pachnodus silhouettanus
* 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 braccoensis
* Alzoniella hartwigschuetti
* Alzoniella macrostoma
* Alzoniella manganellii
* Alzoniella microstoma
* Alzoniella montana
* Alzoniella rolani
* Alzoniella sigestra
* Austropyrgus colensis
* Austropyrgus foris
* Austropyrgus grampianensis
* Austropyrgus nepeanensis
* Avenionia berenguieri
* Avenionia parvula
* Avenionia roberti
* Belgrandia boscae
* Belgrandia gibba
* Belgrandia heussi
* Belgrandiella dabriana
* Belgrandiella libanica
* Bythinella badensis
* Bythinella hansboetersi
* Bythiospeum alpinum
* Bythiospeum diaphanoides
* Bythiospeum diaphanum
* Bythiospeum puerkhaueri
* Bythiospeum transsylvanica
* Bythiospeum vallei
* Catapyrgus fraterculus
* Chilopyrgula sturanyi
* Chondrobasis levantina
* Dabriana bosniaca
* Fissuria boui
* Fissuria planospira
* Fissuria raehlei
* Fluviopupa gracilis
* Fluviopupa ramsayi
* Fonscochlea zeidleri
* Greenbrier cavesnail (Fontigens turritella)
* Graziana papukensis
* Hauffenia plana
* Hauffenia subcarinata
* Hemistomia gemma
* Hydrobia accrensis
* Hydrobia brondeli
* Hydrobia lactea
* Iglica giustii
* Iglica hauffeni
* Iglica luxurians
* Iglica pezzolii
* Iglica vobarnensis
* Islamia gaiteri
* Islamia globulus
* Istriana mirnae
* Lanzaia rudnicae
* Lobogenes pusilla
* Mercuria zopissa
* Milesiana schuelei
* Nanocochlea parva
* Narentiana albida
* Ochridopyrgula macedonica
* Ohridohoratia pygmaea
* Ohridohoratia sturanyi
* Pachydrobiella brevis
* Paladilhiopsis pretneri
* Paladilhiopsis serbica
* Paraprososthenia acicula
* Paraprososthenia bollingi
* Paraprososthenia brandti
* Paraprososthenia jullei
* Paraprososthenia taylori
* Phreatica bolei
* Potamopyrgus oscitans
* Potamopyrgus troglodytes
* Pseudamnicola falkneri
* Bear Lake springsnail (Pyrgulopsis pilsbryana)
* Huachuca springsnail (Pyrgulopsis thompsoni)
* Radomaniola caputlacus
* Sheitanok amidicus
* Savannah pebblesnail (Somatogyrus tenax)
* Sororipyrgus kutukutu
* Sororipyrgus raki
* Terranigra kosovica
* Victodrobia victoriensis

**Bithyniids**

* Bithynia candiota
* Gabbiella rosea
* Pseudobithynia pentheri
* Pseudobithynia westerlundii

**Moitessieriids**

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

**Assimineids**

* Omphalotropis circumlineata
* Omphalotropis zelriolata

**Pomatiopsids**

* 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

**Stenothyrids**

* Stenothyra khongi
* Stenothyra wykoffi

### Sorbeoconcha

* Bridouxia ponsonbyi
* Bridouxia praeclara
* Brotia mariae
* Cleopatra grandidieri
* Spider elimia (Elimia arachnoidea)
* Savannah elimia (Elimia caelatura)
* Slowwater elimia (Elimia interveniens)
* Carved elimia (Elimia plicatastriata)
* File elimia (Elimia striatula)
* Squat elimia (Elimia variata)
* Topaz juga (Juga acutifilosa)
* Lavigeria coronata
* Geniculate river snail (Lithasia geniculata)
* Madagasikara madagascariensis
* Melanatria fluminea
* Melanoides admirabilis
* Melanoides nsendweensis
* Melanoides polymorpha
* Melanoides pupiformis
* Melanoides turritispira
* Melanopsis lorcana
* Bottle hornsnail (Pleurocera gradata)
* Skirted hornsnail (Pleurocera pyrenella)
* Potadoma liricincta
* Tanganyicia rufofilosa

### Architaenioglossa

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

**Pupinids**

* Pupina coxeni
* Pupina pfeifferi

**Diplommatinids**

* Cochlostoma asturicum
* Cochlostoma dalmatinum
* Cochlostoma euboicum
* Cochlostoma mostarensis
* Cochlostoma obscurum
* Cochlostoma pageti
* Cochlostoma parnonis
* Cochlostoma pinteri
* Cochlostoma stossichi
* Diplommatina lamellata
* Diplommatina lutea
* Moussonia fuscula
* Palaina dimorpha
* Palaina martensi
* Plectostoma christae

**Aciculids**

* Acicula beneckei
* Acicula disjuncta
* Acicula hausdorfi
* Acicula vezzanii
* Menkia horsti
* Platyla elisabethae
* Platyla minutissima
* Platyla orthostoma
* Platyla pezzolii
* Platyla sardoa
* Platyla subdiaphana
* Platyla talentii
* Renea kobelti
* Renea moutonii

**Viviparids**

* Bellamya costulata
* Bellamya jucunda
* Bellamya monardi
* Bellamya rubicunda

**Ampullariids**

* Afropomus balanoidea
* Lanistes elliptus
* Lanistes stuhlmanni
* Pomacea expansa

**Craspedopomatids**

* Craspedopoma hespericum
* Craspedopoma monizianum

### Lower Heterobranchia species

* Valvata rhabdota
* Valvata stenotrema

### Cycloneritimorpha

* Neritina natalensis
* Neritina rubricata
* Theodoxus anatolicus

### Hygrophila species

* Biomphalaria smithi
* Bulinus cernicus
* Bulinus hightoni
* Bulinus octaploidus
* Burnupia crassistriata
* Burnupia stuhlmanni
* Ceratophallus crassus
* Gyraulus lychnidicus
* Lymnaea tumrokensis
* Mud snail (Omphiscola glabra)
* Stimulator consetti
* Stagnicola montenegrinus

### 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
* Amphinaias asperata
* Amphinaias houstonensis
* Amphinaias refulgens
* Anodonta vescoiana
* Rayed creekshell (Anodontoides radiatus)
* Coelatura hypsiprymna
* 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)
* Fusconaia infucata
* Southern sandshell (Hamiota australis)
* Lampsilis bracteata
* Lampsilis cardium
* Waccamaw fatmucket (Lampsilis fullerkati)
* Lampsilis ovata
* Orangenacre mucket (Lampsilis perovalis)
* Lampsilis satura
* Leguminaia wheatleyi
* Scale shell (Leptodea leptodon)
* Tidewater mucket (Leptodea ochracea)
* Ligumia nasuta
* Medionidus conradicus
* Obovaria subrotunda
* Obovaria unicolor
* Oxynaia jourdyi
* Ohio pigtoe (Pleurobema cordatum)
* Pleurobema riddellii
* Pyramid pigtoe (Pleurobema rubrum)
* Ptychobranchus occidentalis
* Ptychobranchus subtentum
* Ptychorhynchus pfisteri
* 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

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

**Hyriids**

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

### Cardiida

* Bear paw clam (Hippopus hippopus)
* China clam (Hippopus porcellanus)
* Maxima clam (Tridacna maxima)
* Fluted giant clam (Tridacna squamosa)

### Venerida

* Dreissena presbensis
* Pisidium montigenum
* Sphaerium austeni
* Sphaerium solidum

## Cephalopods

* Giant Australian cuttlefish (Sepia apama)
