List of endangered invertebrates

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[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)]

  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.[1] 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.[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 endangered invertebrate species and subspecies as evaluated by the IUCN.

Molluscs[edit]

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

Gastropods[edit]

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

Stylommatophora[edit]

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

Partulids[edit]
Achatinellids[edit]
Cerastids[edit]
Endodontids[edit]
Charopids[edit]
Helicarionids[edit]
Orthalicids[edit]

Species

Subspecies

Euconulids[edit]
Streptaxids[edit]

Species

Subspecies

Camaenids[edit]
Helicids[edit]
Hygromiids[edit]
Other Stylommatophora species[edit]

Littorinimorpha[edit]

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

Hydrobiids[edit]
Bithyniids[edit]

Species

Subspecies

Assimineids[edit]
Pomatiopsids[edit]
Other Littorinimorpha species[edit]

Sorbeoconcha[edit]

Architaenioglossa[edit]

Species

Subspecies

Cycloneritimorpha[edit]

Hygrophila species[edit]

There are 22 Hygrophila species assessed as endangered.

Planorbids[edit]
Lymnaeids[edit]

Neogastropoda[edit]

Other gastropod species[edit]

Bivalvia[edit]

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

Unionida[edit]

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

Margaritiferids[edit]
Unionids[edit]

Species

Subspecies

Other Unionida species[edit]

Venerida[edit]

Cephalopods[edit]

Cnidaria[edit]

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

Hydrozoa[edit]

Anthozoa[edit]

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

Sea pens[edit]

Actinaria[edit]

Scleractinia[edit]

Arthropods[edit]

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

Centipedes[edit]

Arachnids[edit]

There are 72 arachnid species assessed as endangered.

Harvestmen[edit]

Spiders[edit]

Other arachnid species[edit]

Branchiopoda[edit]

Millipedes[edit]

Malacostracans[edit]

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

Isopods[edit]

Species

Subspecies

Amphipods[edit]

Species

Subspecies

Decapods[edit]

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

Parastacids[edit]
Gecarcinucids[edit]
Atyids[edit]
Cambarids[edit]

Species

Subspecies

Potamonautids[edit]
Potamids[edit]
Palaemonids[edit]

Species

Subspecies

Other decapod species[edit]

Insects[edit]

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

Blattodea[edit]

Orthoptera[edit]

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

Lentulids[edit]
Tetrigids[edit]
Euschmidtiids[edit]
Mogoplistids[edit]
Pamphagids[edit]
Crickets[edit]

Species

Subspecies

Acridids[edit]
Tettigoniids[edit]
Phaneropterids[edit]

Species

Subspecies

Hymenoptera[edit]

Lepidoptera[edit]

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

Swallowtail butterflies[edit]
Lycaenids[edit]
Nymphalids[edit]
Other Lepidoptera species[edit]

Beetles[edit]

There are 72 beetle species assessed as endangered.

Dytiscids[edit]
Stag beetles[edit]
Geotrupids[edit]
Longhorn beetles[edit]
Scarabaeids[edit]
Other beetle species[edit]

Odonata[edit]

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

Platystictids[edit]
Platycnemidids[edit]

Species

Subspecies

Megapodagrionids[edit]
Gomphids[edit]

Species

Subspecies

Calopterygids[edit]

Species

Subspecies

Coenagrionids[edit]

Species

Subspecies

Aeshnids[edit]

Species

Subspecies

Libellulids[edit]

Species

Subspecies

Other Odonata[edit]

Species

Subspecies

Other insect species[edit]

Echinoderms[edit]

Other invertebrate species[edit]

See also[edit]

References[edit]

  1. ^ "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.
  2. ^ "Limitations of the Data". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). 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). Retrieved 11 January 2016.