List of vulnerable invertebrates

Short description: none

Vulnerable (VU) species are considered to be facing a high risk of extinction in the wild.

In July 2016, the International Union for Conservation of Nature (IUCN) listed 2178 vulnerable invertebrate species.^[1] 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.^[2] 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".^[3]

This is a complete list of vulnerable invertebrate species and subspecies as evaluated by the IUCN.

Nemertea species

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

Cnidaria

There are 203 species in the phylum Cnidaria assessed as vulnerable.

Hydrozoa

Millepora foveolata
Millepora latifolia

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

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.