List of critically endangered invertebrates
- : 15 species
- Critically endangered (CR): 987 species
- Endangered (EN): 1,163 species
- Vulnerable (VU): 2,178 species
- Near threatened (NT, LR/cd): 1,105 species
- Least concern (LC): 6,919 species
- Data deficient (DD): 5,278 species
Invertebrate species (IUCN, 2020.1)
- 17,646 extant species have been evaluated
- 12,368 of those are fully assessed[a]
- 8024 are not threatened at present[b]
- 4328 to 9606 are threatened[c]
- 410 to 616 are extinct or extinct in the wild:
- 395 extinct (EX) species[d]
- 15 extinct in the wild (EW)
- 206 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
Critically Endangered (CR) species face an extremely high risk of extinction in the wild.
As of July 2016, the International Union for Conservation of Nature (IUCN) lists 987 critically endangered invertebrate species, including 206 which are tagged as possibly extinct.[1][2] 5.5% of all evaluated invertebrate species are listed as critically endangered. The IUCN also lists 14 invertebrate subspecies as critically endangered.
No subpopulations of invertebrates have been evaluated by the IUCN.
Additionally 5278 invertebrate species (29% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN.[3] While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed."[4]
This is a complete list of critically endangered invertebrate species and subspecies as evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such.
Nemertea species[]
- (possibly extinct)
Annelids[]
- Mesonerilla prospera
Onychophora[]
- Pink velvet worm (Opisthopatus roseus)
- Lion's Hill velvet worm (Peripatopsis leonina)
- Speleoperipatus spelaeus
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
There are 581 mollusc species and 11 mollusc subspecies assessed as critically endangered.
Gastropods[]
There are 511 gastropod species and six gastropod subspecies assessed as critically endangered.
Stylommatophora[]
Stylommatophora includes the majority of land snails and slugs. There are 233 species and five subspecies in the order Stylommatophora assessed as critically endangered.
Amastrids[]
- Amastra cylindrica
- Amastra micans
- Amastra rubens
- Amastra spirizona
- Armsia petasus
- Laminella sanguinea
- Tropidoptera heliciformis
Partulids[]
- Eua globosa (possibly extinct)
- Partula affinis
- Partula calypso
- Partula clara
- Partula emersoni
- Fat Guam partula (Partula gibba)
- Partula guamensis (possibly extinct)
- Partula langfordi
- Partula leucothoe (possibly extinct)
- Partula martensiana
- (possibly extinct)
- Polynesian tree snails (Partula otaheitana)
- Radiolate partula (Partula radiolata)
- Moorean viviparious tree snail (Partula taeniata)
- Short Samoan tree snail (Samoana abbreviata)
- Samoana attenuata
- Samoana bellula
- Samoana burchi
- Samoana cramptoni (possibly extinct)
- Samoana decussatula
- Samoana dryas
- Samoana fragilis
- Samoana hamadryas
- Samoana meyeri
- Samoana oreas
- Samoana strigata
Achatinellids[]
- Achatinella apexfulva
- Achatinella bellula
- Achatinella bulimoides
- Achatinella byronii
- Achatinella cestus
- Achatinella concavospira
- Achatinella curta
- Achatinella decipiens
- Achatinella fulgens
- Achatinella fuscobasis
- Achatinella leucorrhaphe
- Achatinella lila
- Achatinella lorata
- Achatinella mustelina
- Achatinella phaeozona
- Achatinella pulcherrima
- Achatinella pupukanioe
- Achatinella sowerbyana
- Achatinella stewartii
- Achatinella swiftii
- Achatinella taeniolata
- Achatinella turgida
- Achatinella viridans
- Achatinella vulpina
- Gulickia alexandri
- Partulina confusa
- Partulina dubia
Endodontids[]
Species
- Aaadonta angaurana (possibly extinct)
- Aaadonta irregularis
- Aaadonta kinlochi (possibly extinct)
- Aaadonta pelewana (possibly extinct)
- Cookeconcha contorta
- Endodonta apiculata (possibly extinct)
Subspecies
- Aaadonta constricta babelthuapi
- Aaadonta constricta constricta
- Aaadonta constricta komakanensis
- Aaadonta fuscozonata depressa
- Aaadonta fuscozonata fuscozonata
Charopids[]
- Ammonite snail (Helenoconcha relicta)
- Kondoconcha othnius
- (possibly extinct)
- Mautodontha boraborensis
- Mautodontha ceuthma
- Opanara altiapica
- Opanara areaensis
- Opanara bitridentata
- Opanara caliculata
- Opanara depasoapicata
- Opanara duplicidentata
- Opanara fosbergi
- Opanara megomphala
- Opanara perahuensis
- Orangia maituatensis
- Palline notera
- Radioconus goeldi
- Rhysoconcha variumbilicata
- Ruatara koarana
- Semperdon kororensis
- Semperdon xyleborus
- Dlinza Forest pinwheel (Trachycystis clifdeni)
- Trachycystis placenta
Helicarionids[]
- (possibly extinct)
- Erepta stylodon
- Harmogenanina implicata
- Zingis radiolata (possibly extinct)
Orthalicids[]
- Bulimulus achatellinus (possibly extinct)
- Bulimulus adelphus (possibly extinct)
- Bulimulus adserseni
- Bulimulus chemitzioides
- Bulimulus curtus
- Bulimulus deridderi (possibly extinct)
- Bulimulus duncanus (possibly extinct)
- Bulimulus eos (possibly extinct)
- Bulimulus eschariferus
- Bulimulus galapaganus
- Bulimulus habeli
- Bulimulus hirsutus
- Bulimulus indefatigabilis
- Bulimulus jacobi
- Bulimulus lycodus (possibly extinct)
- Bulimulus ochsneri
- Bulimulus reibischi
- Bulimulus saeronius (possibly extinct)
- Bulimulus sculpturatus
- Bulimulus sp. nov. 'josevillani' (possibly extinct)
- Bulimulus sp. nov. 'krameri' (possibly extinct)
- Bulimulus sp. nov. 'nilsodhneri' (possibly extinct)
- Bulimulus sp. nov. 'tuideroyi' (possibly extinct)
- Bulimulus sp. nov. 'vanmoli' (possibly extinct)
- Bulimulus tanneri (possibly extinct)
- Bulimulus wolfi
- Leuchocharis pancheri
- Lord Howe flax snail (Placostylus bivaricosus)
- (possibly extinct)
Rhytidids[]
- (possibly extinct)
- Pondoland cannibal snail (Natalina beyrichi)
- Rhytida clarki
- Rhytida oconnori
Streptaxids[]
- Conturbatia crenata (possibly extinct)
- Glabrennea silhouettensis
- Glabrennea thomasseti
- Gonospira duponti
- Gulella puzeyi
- Gulella salpinx
Lauriids[]
- Leiostyla abbreviata (possibly extinct)
- Leiostyla cassida (possibly extinct)
- Leiostyla gibba (possibly extinct)
- Leiostyla simulator (possibly extinct)
Helicids[]
- Assyriella rechingeri
- Chilostoma crombezi
- Hemicycla mascaensis
- Hemicycla modesta (possibly extinct)
- Hemicycla plicaria
- Hemicycla saulcyi
- Idiomela subplicata
- Theba arinagae
- Corsican snail (Tyrrhenaria ceratina)
Hygromiids[]
- Actinella obserata
- Caseolus subcalliferus
- Discula bulverii
- Discula lyelliana (possibly extinct)
- Discula tabellata
- Discula testudinalis
- Discula tetrica (possibly extinct)
- Geomitra delphinuloides (possibly extinct)
- Geomitra grabhami (possibly extinct)
- Ichnusomunda sacchii
- Lemniscia galeata
- Leptaxis vetusa
- (possibly extinct)
- Pyrenaearia molae
- Trochoidea pseudojacosta
- Xerosecta giustii
Enids[]
Other Stylommatophora species[]
- Bertia cambojiensis
- Cecilioides eulima
- Cerion nanus
- Draparnaudia anniae
- Draparnaudia subnecata
- Gonyostomus gonyostomus
- Helicostyla smargadina
- Banded dune snail (Helminthoglypta walkeriana)
- Hirinaba curytibana
- Magazine Mountain middle-toothed snail (Inflectarius magazinensis)
- Lampedusa melitensis
- Megalobulimus grandis
- Megalobulimus proclivis
- Fraternal snail (Micrarionta feralis)
- (possibly extinct)
- Orcula fuchsi
- Oxyloma kanabense
- Paraboysidia serpa
- Catalina mountain snail (Radiocentrum avalonense)
- (possibly extinct)
- Trochochlamys ogasawarana
- Videna pagodula
- Videna pumila
- Zilchogyra paulistana
Littorinimorpha[]
There are 181 species in the order Littorinimorpha assessed as critically endangered.
Hydrobiids[]
- (possibly extinct)
- Alzoniella iberopyrenaica
- Alzoniella marianae
- Beddomeia tumida (possibly extinct)
- (possibly extinct)
- Belgrandia varica (possibly extinct)
- Belgrandiella austriana
- Belgrandiella bachkovoensis
- (possibly extinct)
- (possibly extinct)
- Belgrandiella ganslmayri
- (possibly extinct)
- Belgrandiella mimula
- (possibly extinct)
- Belgrandiella parreyssii
- Belgrandiella pelerei
- Belgrandiella styriaca
- Bythinella cylindrica
- (possibly extinct)
- Bythinella gloeeri
- Bythinella markovi
- Bythinella turca
- Bythiospeum cisterciensorum
- (possibly extinct)
- (possibly extinct)
- Bythiospeum pfeifferi
- (possibly extinct)
- Bythiospeum tschapecki
- (possibly extinct)
- Caledoconcha carnosa
- Coahuilix de hubbs snail (Coahuilix hubbsi)
- (possibly extinct)
- (possibly extinct)
- Fluvidona petterdi
- Graecoanatolica brevis (possibly extinct)
- Graecoanatolica conica (possibly extinct)
- Graecoanatolica vegorriticola
- Grossuana thracica
- Hadopyrgus ngataana
- Hemistomia aquilonaris
- Hemistomia crosseana
- Hemistomia gorotitei
- Hemistomia lacinia
- Hemistomia neku
- Hemistomia shostakovichi
- Hemistomia whiteleggei
- Hemistomia xaracuu
- Hemistomia yalayu
- Horatia lucidulus
- (possibly extinct)
- Iglica gratulabunda (possibly extinct)
- Iglica soussensis
- Islamia bendidis (possibly extinct)
- Islamia graeca (possibly extinct)
- Islamia hadei (possibly extinct)
- (possibly extinct)
- Islamia trichoniana
- (possibly extinct)
- Jardinella colmani
- (possibly extinct)
- Beaverpond marstonia (Marstonia castor)
- Ozark pyrg (Marstonia ozarkensis) (possibly extinct)
- (possibly extinct)
- Ohridohauffenia minuta (possibly extinct)
- (possibly extinct)
- Plagigeyeria tribunicae
- Potamopyrgus acus (possibly extinct)
- Potamopyrgus oppidanus
- Bruneau hot springsnail (Pyrgulopsis bruneauensis)
- Ash Meadows pebblesnail (Pyrgulopsis erythropoma)
- Socorro springsnail (Pyrgulopsis neomexicana)
- New Mexico hotspring snail (Pyrgulopsis thermalis)
- Three Forks springsnail (Pyrgulopsis trivialis)
- (Pyrgulopsis ventricosa)
- (possibly extinct)
- (Saxurinator labiatus)
- Coosa pebblesnail (Somatogyrus coosaensis)
- Stocky pebblesnail (Somatogyrus crassus) (possibly extinct)
- Tennessee pebblesnail (Somatogyrus currierianus) (possibly extinct)
- Fluted pebblesnail (Somatogyrus hendersoni) (possibly extinct)
- Atlas pebblesnail (Somatogyrus humerosus) (possibly extinct)
- Dwarf pebblesnail (Somatogyrus nanus) (possibly extinct)
- Pygmy pebblesnail (Somatogyrus pygmaeus)
- Quadrate pebblesnail (Somatogyrus quadratus)
- Rolling pebblesnail (Somatogyrus strengi)
- Opaque pebblesnail (Somatogyrus tennesseensis)
- (possibly extinct)
- (possibly extinct)
Cochliopids[]
- Brune's tryonia (Tryonia brunei) (possibly extinct)
Bithyniids[]
- (possibly extinct)
- (possibly extinct)
Moitessieriids[]
- Henrigirardia wienini (possibly extinct)
- (possibly extinct)
Assimineids[]
- Kubaryia pilikia (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
Pomatiopsids[]
- Tomichia cawstoni
- Tomichia natalensis
- Tomichia tristis
Sorbeoconcha[]
- Pleurocera ampla (Elimia ampla)
- Lily Shoals elimia (Elimia annettae)
- (Elimia bellacrenata)
- Mossy elimia (Elimia troostiana) (possibly extinct)
- Plicate rocksnail (Leptoxis plicata)
- (possibly extinct)
- Melanopsis brevicula
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- Corpulent hornsnail (Pleurocera corpulenta)
- Tylomelania kruimeli
Architaenioglossa[]
There are 48 species in the order Architaenioglossa assessed as critically endangered.
Cyclophorids[]
- Alycaeus balingensis
- Boucardicus fidimananai
- Boucardicus fortistriatus
- Boucardicus simplex
- (possibly extinct)
Diplommatinids[]
- Arinia boreoborneensis
- Arinia dentifera
- Arinia oviformis
- Arinia simplex
- Diplommatina alata (possibly extinct)
- Diplommatina aurea (possibly extinct)
- Diplommatina cacuminulus
- Diplommatina crassilabris
- Diplommatina gibboni (possibly extinct)
- Diplommatina madaiensis
- Diplommatina ringens
- Opisthostoma decrespignyi (possibly extinct)
- Opisthostoma fraternum
- Opisthostoma inornatum
- Opisthostoma jucundum
- Opisthostoma mirabile
- Opisthostoma otostoma (possibly extinct)
- Opisthostoma perspectivum
- Palaina albata (possibly extinct)
- Palaina moussoni
- Palaina patula (possibly extinct)
- Palaina platycheilus (possibly extinct)
- Palaina pupa (possibly extinct)
- Palaina rubella
- Palaina striolata
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- Pseudopalaina polymorpha
Viviparids[]
- Bellamya liberiana
- Bellamya mweruensis
- Bellamya pagodiformis
- Margarya monodi
- Margarya yangtsunghaiensis (possibly extinct)
Other Architaenioglossa species[]
- Lanistes neritoides
- Pomacea ocanensis
- Renea bourguignatiana
Cycloneritimorpha[]
- Neritina tiassalensis (possibly extinct)
- Ogasawarana chichijimana
- Ogasawarana habei
- Ogasawarana metamorpha
- Ogasawarana rex
- Ogasawarana yoshiwarana
- Theodoxus altenai
- Theodoxus valentinus
Hygrophila[]
Species
- Australian freshwater limpet (Ancylastrum cumingianus)
- Ancylus ashangiensis
- Lantzia carinata
- Wicker ancylid (Rhodacmea filosa)
- Fat-whorled pondsnail (Stagnicola bonnevillensis)
- Thickshell pondsnail (Stagnicola utahensis) (possibly extinct)
Subspecies
Neogastropoda[]
- Conus lugubris
- Conus mordeirae
- Conus salreiensis
Other gastropod species[]
- Black abalone (Haliotis cracherodii)
- Siphonaria compressa
Bivalvia[]
There are 69 species and five subspecies in the class Bivalvia assessed as critically endangered.
Unionida[]
There are 66 species and five subspecies in the order Unionoida assessed as critically endangered.
Margaritiferids[]
Species
- Spengler's freshwater mussel (Margaritifera auricularia)
- Louisiana pearlshell (Margaritifera hembeli)
Subspecies
- Margaritifera margaritifera durrovensis
Etheriids[]
Unionids[]
Species
- Appalachian elktoe (Alasmidonta raveneliana)
- Fat threeridge (Amblema neislerii)
- (possibly extinct)
- Fanshell (Cyprogenia stegaria)
- Dromedary naiad (Dromus dromas)
- Recovery pearly mussel (Elliptio nigella)
- Tar River spiny mussel (Elliptio steinstansana)
- Cumberlandian combshell (Epioblasma brevidens)
- Upland combshell (Epioblasma metastriata)
- Southern acorn riffle shell (Epioblasma othcaloogensis) (possibly extinct)
- Penitent mussel (Epioblasma penita)
- Tubercled blossom (Epioblasma torulosa)
- Shiny pigtoe (Fusconaia cor)
- False spike (Fusconaia mitchelli)
- Cracking pearlymussel (Hemistena lata)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- Speckled pocketbook (Lampsilis streckeri)
- Alabama lamp naiad (Lampsilis virescens)
- Carolina heelsplitter (Lasmigona decorata)
- Birdwing pearlymussel (Lemiox rimosus)
- Lexingtonia subplana
- Gulf moccasinshell (Medionidus penicillatus)
- Ochlockonee moccasinshell (Medionidus simpsonianus)
- Suwannee moccasinshell (Medionidus walkeri)
- Haddleton lampmussel (Obovaria haddletoni) (possibly extinct)
- Golf stick pearly mussel (Obovaria retusa)
- Little winged pearly mussel (Pegias fabula)
- White warty-back pearly mussel (Plethobasus cicatricosus)
- Orange-footed pimpleback mussel (Plethobasus cooperianus)
- Painted clubshell (Pleurobema chattanoogaense)
- Club naiad (Pleurobema clava)
- James River spinymussel (Pleurobema collina)
- Black clubshell (Pleurobema curtum) (possibly extinct)
- Dark pigtoe (Pleurobema furvum)
- Southern pigtoe (Pleurobema georgianum)
- Cumberland pigtoe (Pleurobema gibberum)
- Georgia pigtoe (Pleurobema hanleyianum)
- Flat pigtoe (Pleurobema marshalli)
- Rough pigtoe pearly mussel (Pleurobema plenum)
- Warrior pigtoe (Pleurobema rubellum)
- Popenaias popeii
- Southern kidneyshell (Ptychobranchus jonesi)
- Winged mapleleaf (Quadrula fragosa)
- Theliderma intermedia
- Appalachian monkeyface (Theliderma sparsa)
- Stirrupshell (Theliderma stapes)
- Theliderma tuberosa
- Pale lilliput naiad (Toxolasma cylindrellus)
- Purple bean (Villosa perpurpurea)
- Cumberland bean pearly mussel (Villosa trabalis)
Subspecies
- (Epioblasma florentina curtisi)
- Brown-blossom naiad (Epioblasma florentina walkeri)
- White catspaw (Epioblasma obliquata perobliqua)
- Northern riffleshell (Epioblasma torulosa rangiana)
Hyriids[]
- Glenelg freshwater mussel (Hyridella glenelgensis)
Venerida[]
- Dreissena caspia (possibly extinct)
Cephalopods[]
- Opisthoteuthis chathamensis
Cnidaria[]
- Staghorn coral (Acropora cervicornis)
- Elkhorn coral (Acropora palmata)
- Millepora boschmai (possibly extinct)
- Wellington's solitary coral (Rhizopsammia wellingtoni) (possibly extinct)
- Siderastrea glynni
- (Tubastraea floreana)
Arthropods[]
- : 2 species
- Critically endangered (CR): 393 species
- Endangered (EN): 626 species
- Vulnerable (VU): 1,081 species
- Near threatened (NT, LR/cd): 398 species
- Least concern (LC): 4,080 species
- Data deficient (DD): 2,890 species
Arthropod species (IUCN, 2016-2)
- 9470 extant species have been evaluated
- 6580 of those are fully assessed[a]
- 4478 are not threatened at present[b]
- 2100 to 4990 are threatened[c]
- 83 to 169 are extinct or extinct in the wild:
- 81 extinct (EX) species[d]
- 2 extinct in the wild (EW)
- 86 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
There are 394 arthropod species and three arthropod subspecies assessed as critically endangered.
Centipedes[]
- (possibly extinct)
- (possibly extinct)
Seed shrimps[]
- Kapcypridopsis barnardi
- Spelaeoecia bermudensis
Arachnids[]
There are 47 arachnid species assessed as critically endangered.
Harvestmen[]
- (Benoitinus elegans)
- (possibly extinct)
- Holozoster ovalis (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- Sitalcicus incertus (possibly extinct)
Spiders[]
- Andasta siltte
- Apolania segmentata
- Ariadna ustulata
- Euso muehlenbergi (possibly extinct)
- Farqua quadrimaculata
- (possibly extinct)
- Hasarius mahensis
- Desertas wolf spider (Hogna ingens)
- Hybosida dauban
- Hybosida lucida
- (possibly extinct)
- (Liphistius kanthan)
- Microdrassus inaudax
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- Horrid ground-weaver (Nothophantes horridus)
- (possibly extinct)
- (Paraheliophanus napoleon)
- Rameshwaram ornamental (Poecilotheria hanumavilasumica)
- Peacock tarantula (Poecilotheria metallica)
- Sesato setosa
- Seychellia lodoiceae (possibly extinct)
- Spermophorides lascars
- Steriphopus lacertosus (possibly extinct)
- Voraptus tenellus (possibly extinct)
- Zoma zoma
Other arachnid species[]
- Afrogarypus seychellesensis (possibly extinct)
- (Dicrogonatus niger)
- Seychelles forest scorpion (Lychas braueri)
- (Michaelothyrus seychellensis)
Branchiopoda[]
- Branchinecta belki
- Branchinecta mexicana
- Stone mountain fairy shrimp (Branchinella lithaca)
- Streptocephalus gracilis
- Streptocephalus moorei
Millipedes[]
- (possibly extinct)
- Major black millipede (Doratogonus major)
- Eucarlia mauriesi
- (possibly extinct)
- Spirobolellus simplex (possibly extinct)
Entognatha[]
- (possibly extinct)
- (possibly extinct)
Maxillopoda[]
Includes barnacles, copepods and a number of related animals.
- Antrisocopia prehensilis
- Erebonectes nesioticus
- Nanocopia minuta
- Paracyclopia naessi
- Speleoithona bermudensis
- Speleophria bivexilla
- Speleophria scottodicarloi
Malacostracans[]
Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 125 malacostracan species and one malacostracan subspecies assessed as critically endangered.
Mysida[]
- Bermudamysis speluncola
- Sterrer's cave mysid (Platyops sterreri)
Mictaceans[]
- Mictocaris halope
Isopods[]
- Atlantasellus cavernicolus
- Bermudalana aruboides
- Curassanthura bermudensis
- Spiky yellow woodlouse (Pseudolaureola atlantica)
- Thermosphaeroma cavicauda
- Thermosphaeroma dugesi
- Thermosphaeroma macrura
- Thermosphaeroma smithi
Amphipods[]
- Aquadulcaris pheronyx
- Dandenong freshwater amphipod (Austrogammarus australis)
- Bogidiella bermudensis
- Cocoharpinia iliffei
- Noel's amphipod (Gammarus desperatus)
- Idunella sketi
- Ingolfiella longipes
- Pseudoniphargus grandimanus
Decapods[]
There are 106 decapod species and one decapod subspecies assessed as critically endangered.
Parastacids[]
- Hairy marron (Cherax tenuimanus)
- Central North burrowing crayfish (Engaeus granulatus)
- Mallacoota burrowing crayfish (Engaeus mallacoota)
- Scottsdale burrowing crayfish (Engaeus spinicaudatus)
- Warragul burrowing crayfish (Engaeus sternalis)
- (Engaewa pseudoreducta)
- Euastacus bindal
- Euastacus dalagarbe
- (Euastacus dharawalus)
- Euastacus eungella
- Euastacus guruhgi
- Euastacus jagara
- Euastacus maidae
- (Euastacus mirangudjin)
- Euastacus monteithorum
- Euastacus robertsi
- Euastacus setosus
- Euastacus yigara
Gecarcinucids[]
- Ceylonthelphusa callista
- Ceylonthelphusa durrelli
- Ceylonthelphusa kotagama
- Ceylonthelphusa nata
- Ceylonthelphusa orthos
- Ceylonthelphusa sanguinea
- Ceylonthelphusa savitriae
- Clinothelphusa kakoota
- Mahatha helaya
- Mahatha iora
- Mahatha lacuna
- Mahatha regina
- Oziothelphusa intuta
- Oziothelphusa kodagoda
- (Parathelphusa reticulata)
- Perbrinckia cracens
- Perbrinckia enodis
- Perbrinckia fido
- Perbrinckia gabadagei (possibly extinct)
- Perbrinckia glabra
- Perbrinckia morayensis
- Perbrinckia punctata
- Perbrinckia quadratus
- Perbrinckia rosae
- Perbrinckia scitula
Atyids[]
- (possibly extinct)
- Caridina apodosis (possibly extinct)
- Caridina linduensis
- Caridina yilong (possibly extinct)
- (possibly extinct)
- Typhlatya iliffei
Cambarids[]
Species
- (possibly extinct)
- Benton County cave crayfish (Cambarus aculabrum)
- (Cambarus laconensis)
- Obey crayfish (Cambarus obeyensis)
- Delaware County cave crayfish (Cambarus subterraneus)
- Oklahoma cave crayfish (Cambarus tartarus)
- (Cambarus veitchorum) (possibly extinct)
- Hell creek cave crayfish (Cambarus zophonastes)
- Hatchie burrowing crayfish (Fallicambarus hortoni)
- (Orconectes sheltae)
- Silver Glen springs cave crayfish (Procambarus attiguus)
- Big-cheeked cave crayfish (Procambarus delicatus) (possibly extinct)
- (Procambarus machardyi)
- Putnam County cave crayfish (Procambarus morrisi)
- (possibly extinct)
Subspecies
Palaemonids[]
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- Florida cave shrimp (Palaemonetes cummingi) (possibly extinct)
Other decapod species[]
- Barbouria cubensis
- (Geothelphusa lanyu)
- (Geothelphusa lutao)
- Singapore freshwater crab (Johora singaporensis)
- Grandbassa river crab (Liberonautes grandbassa)
- Lugbe river crab (Liberonautes lugbe)
- Placid crayfish (Pacifastacus fortis)
- Procaris chacei
- Somersiella sterreri
- (possibly extinct)
- (possibly extinct)
Insects[]
- : 1 species
- Critically endangered (CR): 195 species
- Endangered (EN): 343 species
- Vulnerable (VU): 608 species
- Near threatened (NT, LR/cd): 301 species
- Least concern (LC): 2,843 species
- Data deficient (DD): 1,702 species
Insect species (IUCN, 2016.1)
- 5993 extant species have been evaluated
- 4291 of those are fully assessed[a]
- 3144 are not threatened at present[b]
- 1146 to 2848 are threatened[c]
- 59 to 105 are extinct or extinct in the wild:
- 58 extinct (EX) species[d]
- 1 extinct in the wild (EW)
- 46 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
There are 195 insect species and two insect subspecies assessed as critically endangered.
Blattodea[]
- (possibly extinct)
- (Delosia ornata)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
- (possibly extinct)
Orthoptera[]
There are 72 species in the order Orthoptera assessed as critically endangered.
Euschmidtiids[]
- (Chromomastax movogovodia) (possibly extinct)
- (Euschmidtia bidens) (possibly extinct)
- (Euschmidtia burtti) (possibly extinct)
- (Euschmidtia dirshi) (possibly extinct)
- (Euschmidtia phippsi) (possibly extinct)
- (Euschmidtia uvarovi)
- (Euschmidtia viridifasciata) (possibly extinct)
Crickets[]
- Mahé boulder cricket (Phalangacris alluaudi)
Acridids[]
- (Allaga ambigua) (possibly extinct)
- (Anischnansis burtti) (possibly extinct)
- (Burttia sylvatica)
- (Chorthippus antecessor)
- Bozdagh grasshopper (Chorthippus bozdaghi)
- (Chorthippus ilkazi)
- (Chorthippus lacustris)
- Uluguru Mountain Grasshopper (Cyphocerastis uluguruensis)
- Maspalomas bow-legged grasshopper (Dericorys minutus) (possibly extinct)
- Kilosa noble grasshopper (Eupropacris abbreviata) (possibly extinct)
- (Oropodisma lagrecai)
- (Oropodisma willemsei)
- (Physocrobylus tessa)
- Schayera baiulus
Tettigoniids[]
- Mount Coke false shieldback (Acilacris furcatus)
- Kristin's false shieldback (Acilacris kristinae)
- Santa Monica shieldback katydid (Aglaothorax longipennis)
- Black-spotted false shieldback (Aroegas nigroornatus)
- Pondo flat-necked shieldback (Arytropteris pondo)
- (Eupholidoptera feri)
- (Evergoderes cabrerai) (possibly extinct)
- Hemisaga elongata
- Middlekauf's shieldback katydid (Idiostatus middlekaufi)
- Ixalodectes flectocercus
- Nanodectes bulbicercus
- Pachysaga strobila
- (Paracilacris periclitatus)
- Paradecolya briseferi
- (Parnassiana gionica)
- (Parnassiana menalon)
- (Parnassiana nigromarginata)
- (Parnassiana panaetolikon)
- (Parnassiana parnassica)
- (Peringueyella zulu) (possibly extinct)
- (Platycleis kibris)
- (Psorodonotus ebneri)
- (Rhacocleis trilobata) (possibly extinct)
- (Sardoplatycleis galvagnii)
- Arboreal seedpod shieldback (Thoracistus arboreus)
- Peringuey's seedpod shieldback (Thoracistus peringueyi) (possibly extinct)
- Transkei shieldback (Transkeidectes multidentis)
Other Orthoptera species[]
- Morogoro pretty grasshopper (Acanthothericles bicoloripes) (possibly extinct)
- (Acrostira euphorbiae)
- (Acrostira tenerifae)
- Castleton's flightless katydid (Austrodontura castletoni)
- (Cedarbergeniana imperfecta)
- (Chromousambilla burtti) (possibly extinct)
- (Coptottigia cristata)
- Duplessis' agile katydid (Griffiniana duplessisae)
- (Prionotropis rhodanica)
- (Procytettix fusiformis) (possibly extinct)
- (Pseudosaga maraisi)
- Pyrgacris descampsi
- Torreya pygmy grasshopper (Tettigidea empedonepia)
- (Troglophilus marinae)
Hymenoptera[]
- Adetomyrma venatrix
- Ammobates dusmeti
- (possibly extinct)
- Sri Lankan relict ant (Aneuretus simoni)
- Rusty patched bumble bee (Bombus affinis)
- Franklin's bumblebee (Bombus franklini)
- (possibly extinct)
- Suckley cuckoo bumble bee (Bombus suckleyi)
- Variable cuckoo bumblebee (Bombus variabilis)
- Megachile cypricola (possibly extinct)
- (possibly extinct)
- Australian ant (Nothomyrmecia macrops)
Lepidoptera[]
Moths and butterflies
- (Agdistis marionae)
- Sri Lankan rose (Atrophaneura jophon)
- Cotrell's daisy copper (Chrysoritis cotrelli)
- Prairie sphinx moth (Euproserpinus wiesti)
- Natterer's Longwing (Heliconius nattereri)
- Lepidochrysops lotana
- David's tiger (Parantica davidi)
- Pieris wollastoni (possibly extinct)
- (Polyommatus bollandi)
- Macedonian grayling (Pseudochazara cingovskii)
- Sinai Baton Blue butterfly (Pseudophilotes sinaicus)
Beetles[]
- Coral pink sand dunes tiger beetle (Cicindela albissima)
- Colophon berrisfordi
- Colophon cassoni
- Colophon montisatris
- Colophon primosi
- Delta green ground beetle (Elaphrus viridis)
- Canterbury knobbled weevil (Hadramphus tuberculatus)
- Edith's fungus weevil (Homoeodera edithia)
- Click beetle-like fungus weevil (Homoeodera elateroides)
- Greater fungus weevil (Homoeodera major)
- Bark beetle-like fungus weevil (Homoeodera scolytoides)
- Hydrotarsus compunctus
- Meladema imbricata
- American burying beetle (Nicrophorus americanus)
- Cromwell chafer beetle (Prodontria lewisi)
Odonata[]
Includes dragonflies and damselflies.
Species
- Acanthagrion taxaense
- Allocnemis maccleeryi
- Amanipodagrion gilliesi
- Anisogomphus solitaris (possibly extinct)
- Sydney hawk (Austrocordulia leonardi)
- Boninagrion ezoin
- Boninthemis insularis
- (Chlorocypha jejuna) (possibly extinct)
- Coenagriocnemis insularis
- Disparoneura ramajana (possibly extinct)
- Drepanosticta adami (possibly extinct)
- Drepanosticta austeni (possibly extinct)
- Merry shadowdamsel (Drepanosticta hilaris)
- Drepanosticta montana (possibly extinct)
- Drepanosticta submontana (possibly extinct)
- Smoky-winged threadtail (Elattoneura leucostigma)
- Enallagma maldivensis (possibly extinct)
- Sri Lanka grappletail (Heliogomphus ceylonicus)
- Heliogomphus lyratus (possibly extinct)
- Heliogomphus nietneri (possibly extinct)
- Heteragrion peregrinum (possibly extinct)
- Indolestes boninensis
- Libellula angelina
- Macromia flinti (possibly extinct)
- Atlantic helicopter (Mecistogaster pronoti)
- Crimson Hawaiian damselfly (Megalagrion leptodemas)
- Molokai damselfly (Megalagrion molokaiense) (possibly extinct)
- Flying earwig Hawaiian damselfly (Megalagrion nesiotes)
- (possibly extinct)
- Micromacromia miraculosa
- (Neodythemis takamandensis)
- Mulanje damsel (Oreocnemis phoenix)
- Elusive skimmer (Orthetrum rubens) (possibly extinct)
- (possibly extinct)
- (Pentaphlebia gamblesi)
- (possibly extinct)
- Kenya jewel (Platycypha amboniensis)
- Proischnura polychromatica
- Greek red damsel (Pyrrhosoma elisabethae)
- Rhinocypha ogasawarensis
- Risiocnemis seidenschwarzi
- Emerald Sri Lanka spreadwing (Sinhalestes orientalis)
- Principe dropwing (Trithemis nigra)
- Streamertail (Zygonychidium gracile)
Subspecies
- (Cordulegaster helladica kastalia)
Other insect species[]
- (Acizzia veski)
- Spined dwarf mantis (Ameles fasciipennis) (possibly extinct)
- (Carausius scotti)
- Lord Howe Island stick insect (Dryococelus australis)
- Pygmy hog-sucking louse (Haematopinus oliveri)
- (Pseudococcus markharveyi)
- Mount Donna Buang wingless stonefly (Riekoperla darlingtoni)
- Barrett's plant-louse (Trioza barrettae)
See also[]
- Lists of IUCN Red List critically endangered species
- List of least concern invertebrates
- List of near threatened invertebrates
- List of vulnerable invertebrates
- List of endangered invertebrates
- List of recently extinct invertebrates
- List of data deficient invertebrates
References[]
- ^ "IUCN Red List version 2016.1". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 4 July 2016.
- ^ "Table 9: Possibly Extinct and Possibly Extinct in the Wild Species (IUCN Red List version 2016-1)". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 4 July 2016.
- ^ "Limitations of the Data". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 11 January 2016.
- ^ "2001 Categories & Criteria (version 3.1)". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 11 January 2016.
Categories:
- Critically endangered animals
- IUCN Red List critically endangered species
- Lists of invertebrates