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As of July 2016, the International Union for Conservation of Nature (IUCN) lists 1080 vulnerable arthropod species.[1] 11% of all evaluated arthropod species are listed as vulnerable. The IUCN also lists 29 arthropod subspecies as vulnerable.

2 extinct in the wild arthropod species (0.02%)393 critically endangered arthropod species (4.1%)626 endangered arthropod species (6.6%)1081 vulnerable arthropod species (11%)398 near threatened arthropod species (4.2%)4080 least concern arthropod species (43%)2890 data deficient arthropod species (31%)
Arthropod species (IUCN, 2016-2)
  • 9470 extant species have been evaluated
  • 6580 of those are fully assessed[lower-alpha 1]
  • 4478 are not threatened at present[lower-alpha 2]
  • 2100 to 4990 are threatened[lower-alpha 3]
  • 83 to 169 are extinct or extinct in the wild:
    • 81 extinct (EX) species[lower-alpha 4]
    • 2 extinct in the wild (EW)
    • 86 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
Vulnerable (VU) species are considered to be facing a high risk of extinction in the wild.
Vulnerable (VU) species are considered to be facing a high risk of extinction in the wild.

No subpopulations of arthropods have been evaluated by the IUCN.

For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild". Endangered and critically endangered species also meet the quantitative criteria of vulnerable species, and are listed separately. See: List of endangered arthropods, List of critically endangered arthropods. Vulnerable, endangered and critically endangered species are collectively referred to as threatened species by the IUCN.

Additionally 2875 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.[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 vulnerable arthropod species and subspecies as evaluated by the IUCN.


Seed shrimps



Arachnids


There are 47 arachnid species assessed as vulnerable.


Spiders



Other arachnid species



Branchiopoda



Millipedes



Maxillopoda


Maxillopoda includes barnacles, copepods and a number of related animals. There are 71 species in the class Maxillopoda assessed as vulnerable.


Calanoida


There are 47 species in the order Calanoida assessed as vulnerable.


Diaptomids


Centropagids


Temorids


Cyclopoida



Harpacticoida


There are 18 species in the order Harpacticoida assessed as vulnerable.


Darcythompsoniids


Ameirids


Canthocamptids


Malacostracans


Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 307 malacostracan species and 14 malacostracan subspecies assessed as vulnerable.


Isopods


Species

Subspecies


Amphipods


There are 56 amphipod species and four amphipod subspecies assessed as vulnerable.


Hadziids

Subspecies


Paramelitids


Gammarids


Crangonyctids


Niphargids

Species

Subspecies


Anaspidacea



Decapods


There are 224 decapod species and seven decapod subspecies assessed as vulnerable.


Parastacids


Gecarcinucids


Atyids


Cambarids

Species

Subspecies


Potamonautids


Pseudothelphusids


Potamids


Palaemonids


Trichodactylids


Other decapod species


Insects


There are 608 insect species and 15 insect subspecies assessed as vulnerable.


Flies



Plecoptera



Notoptera



Orthoptera


There are 137 species in the order Orthoptera assessed as vulnerable.


Crickets


Acridids


Stenopelmatids


Tettigoniids


Rhaphidophorids


Phaneropterids


Other Orthoptera species


Hymenoptera


There are 155 species in the order Hymenoptera assessed as vulnerable.


Ants


Colletids


Melittids


Apids


Megachilids


Mantises



Lepidoptera


Lepidoptera comprises moths and butterflies. There are 128 species and ten subspecies in the order Lepidoptera assessed as vulnerable.


Lasiocampids


Swallowtail butterflies


Lycaenids


Nymphalids

Species

Subspecies


Skippers


Pierids


Beetles


There are 50 beetle species assessed as vulnerable.


Dytiscids


Longhorn beetles


Scarabaeids


Other beetle species


Odonata


Odonata includes dragonflies and damselflies. There are 129 species and five subspecies in the order Odonata assessed as vulnerable.


Chlorogomphids


Chlorocyphids


Platycnemidids


Megapodagrionids


Gomphids

Species

Subspecies


Coenagrionids

Species

Subspecies


Aeshnids


Libellulids


Other Odonata species


Other arthropod 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). 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.


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