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List of endangered invertebrates

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16 extinct in the wild invertebrate species (0.09%)987 critically endangered invertebrate species (5.6%)1163 endangered invertebrate species (6.6%)2178 vulnerable invertebrate species (12%)1105 near threatened invertebrate species (6.3%)6919 least concern invertebrate species (39%)5278 data deficient invertebrate species (30%)
Invertebrate species (IUCN, 2020.1)
  • 17,646 extant species have been evaluated
  • 12,368 of those are fully assessed
  • 8024 are not threatened at present
  • 4328 to 9606 are threatened
  • 410 to 616 are extinct or extinct in the wild:
    • 395 extinct (EX) species
    • 15 extinct in the wild (EW)
    • 206 possibly extinct
    • 0 possibly extinct in the wild
  1. excludes data deficient evaluations.
  2. NT, LR/cd, LC.
  3. Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
  4. Chart omits extinct (EX) species
Endangered (EN) species are considered to be facing a very high risk of extinction in the wild.

In July 2016, the International Union for Conservation of Nature (IUCN) listed 1163 endangered invertebrate species. Of all evaluated invertebrate species, 6.4% were listed as endangered. The IUCN also lists 36 invertebrate subspecies as endangered.

No subpopulations of invertebrates have been evaluated by the IUCN.

For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of extinction". An even higher risk is faced by critically endangered species, which meet the quantitative criteria for endangered species. Critically endangered invertebrates are listed separately. There are 2150 invertebrate species which are endangered or critically endangered.

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 endangered invertebrate species and subspecies as evaluated by the IUCN.

Molluscs

There are 507 mollusc species and nine mollusc subspecies assessed as endangered.

Gastropods

There are 448 gastropod species and seven gastropod subspecies assessed as endangered.

Stylommatophora

Stylommatophora includes the majority of land snails and slugs. There are 187 species and two subspecies in the order Stylommatophora assessed as endangered.

Partulids
Achatinellids
Cerastids
Endodontids
Charopids
Helicarionids
Orthalicids

Species

Subspecies

Euconulids
Streptaxids

Species

Subspecies

Camaenids
Helicids
Hygromiids
Other Stylommatophora species

Littorinimorpha

There are 147 species and three subspecies in the order Littorinimorpha assessed as endangered.

Hydrobiids
Bithyniids

Species

Subspecies

Assimineids
Pomatiopsids
Other Littorinimorpha species

Sorbeoconcha

Architaenioglossa

Species

Subspecies

Cycloneritimorpha

Hygrophila species

There are 22 Hygrophila species assessed as endangered.

Planorbids
Lymnaeids

Neogastropoda

Other gastropod species

Bivalvia

There are 57 species and two subspecies in the class Bivalvia assessed as endangered.

Unionida

There are 54 species and two subspecies in the order Unionoida assessed as endangered.

Margaritiferids
Unionids

Species

Subspecies

Other Unionida species

Venerida

Cephalopods

Cnidaria

There are 28 species in the phylum Cnidaria assessed as endangered.

Hydrozoa

Anthozoa

There are 26 species in the class Anthozoa assessed as endangered.

Sea pens

Actinaria

Scleractinia

Arthropods

There are 616 arthropod species and 27 arthropod subspecies assessed as endangered.

Centipedes

Arachnids

There are 72 arachnid species assessed as endangered.

Harvestmen

Spiders

Other arachnid species

Branchiopoda

Millipedes

Malacostracans

Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 170 malacostracan species and six malacostracan subspecies assessed as endangered.

Isopods

Species

Subspecies

Amphipods

Species

Subspecies

Decapods

There are 154 decapod species and two decapod subspecies assessed as endangered.

Parastacids
Gecarcinucids
Atyids
Cambarids

Species

Subspecies

Potamonautids
Potamids
Palaemonids

Species

Subspecies

Other decapod species

Insects

There are 343 insect species and 21 insect subspecies assessed as endangered.

Blattodea

Orthoptera

There are 91 species and two subspecies in the order Orthoptera assessed as endangered.

Lentulids
Tetrigids
Euschmidtiids
Mogoplistids
Pamphagids
Crickets

Species

Subspecies

Acridids
Tettigoniids
Phaneropterids

Species

Subspecies

Hymenoptera

Lepidoptera

Lepidoptera comprises moths and butterflies. There are 51 species in the order Lepidoptera assessed as endangered.

Swallowtail butterflies
Lycaenids
Nymphalids
Other Lepidoptera species

Beetles

There are 72 beetle species assessed as endangered.

Dytiscids
Stag beetles
Geotrupids
Longhorn beetles
Scarabaeids
Other beetle species

Odonata

Odonata includes dragonflies and damselflies. There are 97 species and 19 subspecies in the order Odonata assessed as endangered.

Platystictids
Platycnemidids

Species

Subspecies

Megapodagrionids
Gomphids

Species

Subspecies

Calopterygids

Species

Subspecies

Coenagrionids

Species

Subspecies

Aeshnids

Species

Subspecies

Libellulids

Species

Subspecies

Other Odonata

Species

Subspecies

Other insect species

Echinoderms

Other invertebrate species

See also

References

  1. "IUCN Red List version 2016.1". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Archived from the original on 27 June 2014. Retrieved 4 July 2016.
  2. "Limitations of the Data". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Archived from the original on 7 October 2018. Retrieved 11 January 2016.
  3. "2001 Categories & Criteria (version 3.1)". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Archived from the original on 8 October 2008. Retrieved 11 January 2016.


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