List of vulnerable arthropods

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.

There are 47 arachnid species assessed as vulnerable.

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

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

• Epischura baikalensis

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

• Leptocaris stromatolicolus

• Nitocrella slovenica
• Nitocrella stochi

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

Species

Subspecies

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

Subspecies

• Hadzia fragilis stochi

• Paramelita flexa

Species

Subspecies

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

Species

Subspecies

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

• Otway stonefly (Eusthenia nothofagi)
• Mount Kosciusko wingless stonefly (Leptoperla cacuminis)

• Mount St Helens' grylloblattid (Grylloblatta chirurgica)

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

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

• Melitta hispanica
• Melitta kastiliensis

• Wallace's giant bee (Megachile pluto)

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

• Small lappet moth (Phyllodesma ilicifolia)

Species

Subspecies

• Dakota skipper (Hesperia dacotae)
• Cinquefoil skipper (Pyrgus cirsii)

There are 50 beetle species assessed as vulnerable.

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

Species

Subspecies

• Erpetogomphus lampropeltis lampropeltis

Species

Subspecies

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

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