List of critically endangered arthropods

Extinct, since 1500: 81 species Extinct in the wild (EW): 2 species Critically endangered (CR): 373 species Endangered (EN): 576 species Vulnerable (VU): 1,031 species Near threatened (NT, LR/cd): 365 species Least concern (LC): 3,857 species Data deficient (DD): 2,733 speciesCircle frame.svg
  •   Extinct, since 1500: 81 species
  •   Extinct in the wild (EW): 2 species
  •   Critically endangered (CR): 373 species
  •   Endangered (EN): 576 species
  •   Vulnerable (VU): 1,031 species
  •   Near threatened (NT, LR/cd): 365 species
  •   Least concern (LC): 3,857 species
  •   Data deficient (DD): 2,733 species
Arthropod species (IUCN, 2015.4)
  • 9018 species have been evaluated
  • 6285 are fully assessed (excludes DD)
  • 4222 are not threatened at present (LC, NT, LR/cd)
  • 1980 are threatened (CR, EN, VU)
  • 83 to 162 are extinct or extinct in the wild (EX, EW, CR(PE), CR(PEW))
Critically Endangered (CR) species face an extremely high risk of extinction in the wild.

As of February 2016, the International Union for Conservation of Nature (IUCN) lists 373 critically endangered arthropod species, including 79 which are tagged as possibly extinct.[1][2] 4.1% of all evaluated arthropod species are listed as critically endangered. The IUCN also lists three arthropod subspecies as critically endangered.

No subpopulations of arthropods have been evaluated by the IUCN.

Additionally 2733 arthropod species (30% 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.[3] 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."[4]

This is a complete list of critically endangered arthropod species and subspecies as evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such. Where possible common names for taxa are given while links point to the scientific name used by the IUCN.

Centipedes

  • Ityphilus melanostigmus
  • Mecistocephalus cyclops (possibly extinct)
  • Mecistocephalus sechellarum (possibly extinct)

Seed shrimps

Arachnids

There are 47 arachnid species assessed as critically endangered.

Harvestmen

  • Seychelles blind harvestman
  • Biantes parvulus (possibly extinct)
  • Holozoster ovalis (possibly extinct)
  • Ibalonius lomani (possibly extinct)
  • Mitraceras crassipalpum (possibly extinct)
  • Sitalcicus incertus (possibly extinct)

Spiders

Other arachnid species

  • Afrogarypus seychellesensis (possibly extinct)
  • Silhouette giant mite
  • Seychelles forest scorpion
  • Mahezomus apicoporus
  • Saaristo's giant mite

Branchiopoda

Millipedes

Maxillopoda

Includes barnacles, copepods and a number of related animals.

Malacostracans

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

Mysida

Mictaceans

Isopods

Amphipods

Decapods

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

Parastacids

Gecarcinucids

Atyids

  • Atya brachyrhinus (possibly extinct)
  • Caridina apodosis (possibly extinct)
  • Caridina linduensis
  • Caridina subventralis
  • Caridina tumida
  • Caridina yilong (possibly extinct)
  • Edoneus atheatus
  • Lancaris kumariae
  • Paratya norfolkensis
  • Sinodina acutipoda (possibly extinct)
  • Typhlatya iliffei

Cambarids

Species

Subspecies

Palaemonids

  • Cryphiops brasiliensis
  • Cryphiops luscus (possibly extinct)
  • Leptopalaemon glabrus
  • Macrobrachium denticulatum (possibly extinct)
  • Macrobrachium oxyphilus (possibly extinct)
  • Macrobrachium purpureamanus (possibly extinct)
  • Macrobrachium scorteccii (possibly extinct)
  • Florida cave shrimp (possibly extinct)
  • Palaemonetes lindsayi
  • Palaemonetes mesopotamicus
  • Palaemonetes mexicanus

Other decapod species

Insects

There are 176 insect species and two insect subspecies assessed as critically endangered.

Blattodea

  • Balta crassivenosa (possibly extinct)
  • Desroches cockroach
  • Holocompsa pusilla (possibly extinct)
  • Hololeptoblatta pandanicola
  • Sliferia similis (possibly extinct)
  • Theganopteryx grisea (possibly extinct)
  • Theganopteryx liturata (possibly extinct)
  • Theganopteryx scotti (possibly extinct)

Orthoptera

There are 61 species in the order Orthoptera assessed as critically endangered.

Euschmidtiids

  • Morogoro monkey grasshopper (possibly extinct)
  • Mlingano monkey grasshopper (possibly extinct)
  • Burtt's monkey grasshopper (possibly extinct)
  • Dirsh's monkey grasshopper (possibly extinct)
  • Phipps' monkey grasshopper (possibly extinct)
  • Usambara monkey grasshopper
  • Dar-es-salaam monkey grasshopper (possibly extinct)

Acridids

Tettigoniids

Other Orthoptera species

Hymenoptera

Lepidoptera

Moths and butterflies

Beetles

Odonata

Includes dragonflies and damselflies.

Species

Subspecies

Other insect species

See also

References

  1. ↑ "IUCN Red List version 2015.4". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 19 February 2016.
  2. ↑ "Table 9: Possibly Extinct and Possibly Extinct in the Wild Species (IUCN Red List version 2015.4)". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 19 November 2015.
  3. ↑ "Limitations of the Data". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 11 January 2016.
  4. ↑ "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.
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