Girish Mahajan (Editor)

List of critically endangered invertebrates

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As of July 2016, the International Union for Conservation of Nature (IUCN) lists 987 critically endangered invertebrate species, including 206 which are tagged as possibly extinct. 5.5% of all evaluated invertebrate species are listed as critically endangered. The IUCN also lists 14 invertebrate subspecies as critically endangered.

Contents

No subpopulations of invertebrates have been evaluated 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 critically endangered invertebrate species and subspecies as evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such.

Nemertea species

  • Prosadenoporus agricola (possibly extinct)

    • Annelids

  • Mesonerilla prospera

    • Molluscs

    There are 581 mollusc species and 11 mollusc subspecies assessed as critically endangered.

    Gastropods

    There are 511 gastropod species and six gastropod subspecies assessed as critically endangered.

    Stylommatophora

    Stylommatophora includes the majority of land snails and slugs. There are 233 species and five subspecies in the order Stylommatophora assessed as critically endangered.

    Amastrids
    Partulids
    Achatinellids
    Endodontids

    Species

    Subspecies

    Charopids
    Helicarionids
    Orthalicids
    Rhytidids
    Streptaxids
    Lauriids
    Helicids
    Hygromiids
    Enids
    Other Stylommatophora species

    Littorinimorpha

    There are 181 species in the order Littorinimorpha assessed as critically endangered.

    Hydrobiids
    Cochliopids
    Bithyniids
    Moitessieriids
  • Henrigirardia wienini (possibly extinct)
  • Spiralix corsica (possibly extinct)
    • Assimineids
    Pomatiopsids

    Architaenioglossa

    There are 48 species in the order Architaenioglossa assessed as critically endangered.

    Cyclophorids
    Diplommatinids
    Viviparids
    Other Architaenioglossa species

    Hygrophila

    Species

    Subspecies

  • Bulinus tropicus torensis

    • Bivalvia

    There are 69 species and five subspecies in the class Bivalvia assessed as critically endangered.

    Unionoida

    There are 66 species and five subspecies in the order Unionoida assessed as critically endangered.

    Margaritiferids

    Species

    Subspecies

  • Margaritifera margaritifera durrovensis
    • Etheriids
  • Acostaea rivolii
    • Unionids

    Species

    Subspecies

    Hyriids
  • Glenelg freshwater mussel (Hyridella glenelgensis)

    • Cephalopods

  • Opisthoteuthis chathamensis

    • Arthropods

    There are 394 arthropod species and three arthropod subspecies assessed as critically endangered.

    Seed shrimps

  • Kapcypridopsis barnardi
  • Spelaeoecia bermudensis

    • Arachnids

    There are 47 arachnid species assessed as critically endangered.

    Entognatha

  • Ceratophysella sp. nov. 'HC' (possibly extinct)
  • Delamarephorura tami (possibly extinct)

    • Maxillopoda

    Includes barnacles, copepods and a number of related animals.

    Malacostracans

    Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 125 malacostracan species and one malacostracan subspecies assessed as critically endangered.

    Mysida

  • Bermudamysis speluncola
  • Sterrer's cave mysid (Platyops sterreri)

    • Mictaceans

  • Mictocaris halope

    • Decapods

    There are 106 decapod species and one decapod subspecies assessed as critically endangered.

    Parastacids
    Gecarcinucids
    Atyids
    Cambarids

    Species

    Subspecies

  • Procambarus rogersi expletus
    • Palaemonids
    Other decapod species

    Insects

    There are 195 insect species and two insect subspecies assessed as critically endangered.

    Orthoptera

    There are 72 species in the order Orthoptera assessed as critically endangered.

    Euschmidtiids
    Crickets
    Acridids
    Tettigoniids
    Other Orthoptera species

    Lepidoptera

    Moths and butterflies

    Odonata

    Includes dragonflies and damselflies.

    Species

    Subspecies

  • Chlorogomphus brunneus keramensis
  • Delphi cordulegaster (Cordulegaster helladica kastalia)

    • References

    List of critically endangered invertebrates Wikipedia
    (Text) CC BY-SA


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