In July 2016, the International Union for Conservation of Nature (IUCN) listed 2178 vulnerable invertebrate species. Of all evaluated invertebrate species, 12% are listed as vulnerable. The IUCN also lists 47 invertebrate subspecies as vulnerable.
No subpopulations of invertebrates have been evaluated by the IUCN.
For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild". Endangered and critically endangered species also meet the quantitative criteria of vulnerable species, and are listed separately. See: List of endangered invertebrates, List of critically endangered invertebrates. Vulnerable, endangered and critically endangered species are collectively referred to as threatened species 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. 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".
This is a complete list of vulnerable invertebrate species and subspecies as evaluated by the IUCN.
Nemertea Nightingale ribbon worm (Katechonemertes nightingaleensis) Annelids Giant Palouse earthworm (Driloleirus americanus)
Onychophora
Molluscs There are 879 mollusc species and 18 mollusc subspecies assessed as vulnerable.
Gastropods There are 828 gastropod species and 16 gastropod subspecies assessed as vulnerable.
Stylommatophora Stylommatophora includes the majority of land snails and slugs. There are 339 species and six subspecies in the order Stylommatophora assessed as vulnerable.
Charopids
Helicarionids
Orthalicids
Euconulids
Streptaxids
Ferussaciids
Helminthoglyptids
Oxychilids
Camaenids
Lauriids
Vertiginids
Species
Subspecies Anauchen informis informis Anauchen informis parcedentata
Trissexodontids
Helicids
Species
Subspecies Hemicycla glyceia silensis
Hygromiids
Species
Subspecies Leptaxis simia portosancti
Vitrinids
Chondrinids
Enids
Other Stylommatophora
Species
Subspecies Chlorilis hungerfordiana rufopila Spelaeodiscus triarius tatricus
Littorinimorpha There are 324 species and seven subspecies in the order Littorinimorpha assessed as vulnerable.
Hydrobiids Species
Subspecies
Cochliopids
Bithyniids
Moitessieriids
Assimineids
Pomatiopsids
Amnicolids
Other Littorinimorpha species
Sorbeoconcha There are 55 species in the order Sorbeoconcha assessed as vulnerable.
Pleurocerids
Melanopsids Esperiana sangarica Melanopsis subgraellsiana
Thiarids
Pachychilids
Paludomids
Architaenioglossa Species
Subspecies Renea moutonii moutonii Renea moutonii singularis
Lower Heterobranchia species
Cycloneritimorpha
Hygrophila
Species
Subspecies Gyraulus connollyi exilis
Neogastropoda There are 27 species in the order Neogastropoda assessed as vulnerable.
Conids
Eupulmonata Zospeum biscaiense Zospeum exiguum
Bivalvia There are 49 species and two subspecies in the class Bivalvia assessed as vulnerable.
Unionida There are 37 species and two subspecies in the order Unionoida assessed as vulnerable.
Margaritiferids Margaritifera middendorffi
Unionids Species
Subspecies Lampsilis reeviana reeviana
Hyriids
Iridinids Species
Subspecies Chambardia wahlbergi guillaini
Mycetopodids Diplodontites olssoni
Cardiida
Arcida Scaphula nagarjunai
Venerida
Cephalopods Opisthoteuthis calypso Opisthoteuthis massyae
Cnidaria There are 203 species in the phylum Cnidaria assessed as vulnerable.
Hydrozoa Millepora foveolata Millepora latifolia Millepora striata
Anthozoa There are 202 species in the class Anthozoa assessed as vulnerable.
Scleractinia There are 199 species in the order Scleractinia assessed as vulnerable.
Euphyllids
Dendrophylliids
Acroporids
Poritids
Brain corals
Pocilloporids
Mussids
Pectiniids
Agariciids
Fungiids
Other Scleractinia species
Other Anthozoa species
Arthropods There are 1080 arthropod species and 29 arthropod subspecies assessed as vulnerable.
Seed shrimps
Arachnids There are 47 arachnid species assessed as vulnerable.
Spiders
Other arachnid species
Branchiopoda
Millipedes
Maxillopoda Maxillopoda includes barnacles, copepods and a number of related animals. There are 71 species in the class Maxillopoda assessed as vulnerable.
Calanoida There are 47 species in the order Calanoida assessed as vulnerable.
Diaptomids
Centropagids
Temorids Epischura baikalensis
Cyclopoida
Harpacticoida There are 18 species in the order Harpacticoida assessed as vulnerable.
Darcythompsoniids Leptocaris stromatolicolus
Ameirids Nitocrella slovenica Nitocrella stochi
Canthocamptids
Malacostracans Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 307 malacostracan species and 14 malacostracan subspecies assessed as vulnerable.
Isopods Species
Subspecies
Amphipods There are 56 amphipod species and four amphipod subspecies assessed as vulnerable.
Hadziids Subspecies Hadzia fragilis stochi
Paramelitids Paramelita flexa
Gammarids
Crangonyctids
Niphargids Species
Subspecies
Anaspidacea
Decapods There are 224 decapod species and seven decapod subspecies assessed as vulnerable.
Parastacids
Gecarcinucids
Atyids
Cambarids Species
Subspecies
Potamonautids
Pseudothelphusids
Potamids
Palaemonids
Trichodactylids
Other decapod species
Insects There are 608 insect species and 15 insect subspecies assessed as vulnerable.
Flies
Plecoptera Otway stonefly (Eusthenia nothofagi) Mount Kosciusko wingless stonefly (Leptoperla cacuminis)
Notoptera Mount St Helens' grylloblattid (Grylloblatta chirurgica)
Orthoptera There are 137 species in the order Orthoptera assessed as vulnerable.
Crickets
Acridids
Stenopelmatids
Tettigoniids
Rhaphidophorids
Phaneropterids
Other Orthoptera species
Hymenoptera There are 155 species in the order Hymenoptera assessed as vulnerable.
Ants
Colletids
Melittids Melitta hispanica Melitta kastiliensis
Apids
Megachilids Wallace's giant bee (Megachile pluto)
Mantises
Lepidoptera Lepidoptera comprises moths and butterflies. There are 128 species and ten subspecies in the order Lepidoptera assessed as vulnerable.
Lasiocampids Small lappet moth (Phyllodesma ilicifolia)
Swallowtail butterflies
Lycaenids
Nymphalids Species
Subspecies
Skippers Dakota skipper (Hesperia dacotae) Cinquefoil skipper (Pyrgus cirsii)
Pierids
Beetles There are 50 beetle species assessed as vulnerable.
Dytiscids
Longhorn beetles
Scarabaeids
Other beetle species
Odonata Odonata includes dragonflies and damselflies. There are 129 species and five subspecies in the order Odonata assessed as vulnerable.
Chlorogomphids
Chlorocyphids
Platycnemidids
Megapodagrionids
Gomphids Species
Subspecies Erpetogomphus lampropeltis lampropeltis
Coenagrionids Species
Subspecies
Aeshnids
Libellulids
Other Odonata species
Other arthropod species
Echinoderms
See also Lists of IUCN Red List vulnerable species List of least concern invertebrates List of near threatened invertebrates List of endangered invertebrates List of critically endangered invertebrates List of recently extinct invertebrates List of data deficient invertebrates Cernuellopsis
References