List of endangered arthropods

In July 2016, the International Union for Conservation of Nature (IUCN) listed 616 endangered arthropod species.^[1] Of all evaluated arthropod, 6.5% species are listed as endangered. The IUCN also lists 27 arthropod subspecies as endangered.

No subpopulations of arthropods 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 arthropods are listed separately. There are 1010 arthropod species which are endangered or critically endangered.

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 endangered arthropod species and subspecies as evaluated by the IUCN.

There are 72 arachnid species assessed as endangered.

Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 170 malacostracan species and six malacostracan subspecies assessed as endangered.

Species

Subspecies

Species

Subspecies

• Niphargus elegans zagrebensis

There are 154 decapod species and two decapod subspecies assessed as endangered.

Species

Subspecies

• Withlocoochee light-fleeing cave crayfish (Procambarus lucifugus lucifugus)

Species

Subspecies

• Macrobrachium lamarrei lamarroides

There are 343 insect species and 21 insect subspecies assessed as endangered.

There are 91 species and two subspecies in the order Orthoptera assessed as endangered.

Species

Subspecies

• Phaloria insularis insularis

Species

Subspecies

• Isophya longicaudata longicaudata

Lepidoptera comprises moths and butterflies. There are 51 species in the order Lepidoptera assessed as endangered.

There are 72 beetle species assessed as endangered.

Odonata includes dragonflies and damselflies. There are 97 species and 19 subspecies in the order Odonata assessed as endangered.

Species

Subspecies

Species

Subspecies

Species

Subspecies

• Matrona basilaris japonica

Species

Subspecies

• Pseudagrion torridum hulae

Species

Subspecies

Species

Subspecies

Species

Subspecies

• Lists of IUCN Red List endangered species
• List of least concern arthropods
• List of near threatened arthropods
• List of vulnerable arthropods
• List of critically endangered arthropods
• List of recently extinct arthropods
• List of data deficient arthropods

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