List of vulnerable arthropods

Extinct in the wild (EW): 2 species
Critically endangered (CR): 393 species
Endangered (EN): 626 species
Vulnerable (VU): 1,081 species
Near threatened (NT, LR/cd): 398 species
Least concern (LC): 4,080 species
Data deficient (DD): 2,890 species

Arthropod species (IUCN, 2016-2)

9470 extant species have been evaluated
6580 of those are fully assessed^[a]
4478 are not threatened at present^[b]
2100 to 4990 are threatened^[c]
83 to 169 are extinct or extinct in the wild:
- 81 extinct (EX) species^[d]
- 2 extinct in the wild (EW)
- 86 possibly extinct [CR(PE)]
- 0 possibly extinct in the wild [CR(PEW)]

↑ excludes data deficient evaluations.
↑ NT, LR/cd, LC.
↑ Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
↑ Chart omits extinct (EX) species

Vulnerable (VU) species are considered to be facing a high risk of extinction in the wild.

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

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.

[1] xcludes 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

[a]

[b]

[c]

[d]

[1]

[2]

[3]

Spiders

Other arachnid species

Calanoida

Diaptomids

Centropagids

Temorids

Cyclopoida

Harpacticoida

Darcythompsoniids

Ameirids

Canthocamptids

Isopods

Amphipods

Hadziids

Paramelitids

Gammarids

Crangonyctids

Niphargids

Anaspidacea

Decapods

Parastacids

Gecarcinucids

Atyids

Cambarids

Potamonautids

Pseudothelphusids

Potamids

Palaemonids

Trichodactylids

Other decapod species

Flies

Plecoptera

Notoptera

Orthoptera

Crickets

Acridids

Stenopelmatids

Tettigoniids

Rhaphidophorids

Phaneropterids

Other Orthoptera species

Hymenoptera

Ants

Colletids

Melittids

Apids

Megachilids

Mantises

Lepidoptera

Lasiocampids

Swallowtail butterflies

Lycaenids

Nymphalids

Skippers

Pierids

Beetles

Dytiscids

Longhorn beetles

Scarabaeids

Other beetle species

Odonata

Chlorogomphids

Chlorocyphids

Platycnemidids

Megapodagrionids

Gomphids

Coenagrionids

Aeshnids

Libellulids

Other Odonata species

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