Wikipedia

List of endangered invertebrates

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.

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.

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). 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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