In July 2016, the International Union for Conservation of Nature (IUCN) listed 1080 vulnerable arthropod species. 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. 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".
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 Epischura baikalensis
Cyclopoida
Harpacticoida There are 18 species in the order Harpacticoida assessed as vulnerable.
Darcythompsoniids Leptocaris stromatolicolus
Ameirids Nitocrella slovenica Nitocrella stochi
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 Hadzia fragilis stochi
Paramelitids Paramelita flexa
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 Otway stonefly (Eusthenia nothofagi) Mount Kosciusko wingless stonefly (Leptoperla cacuminis)
Notoptera Mount St Helens' grylloblattid (Grylloblatta chirurgica)
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 Melitta hispanica Melitta kastiliensis
Apids
Megachilids Wallace's giant bee (Megachile pluto)
Mantises
Lepidoptera Lepidoptera comprises moths and butterflies. There are 128 species and ten subspecies in the order Lepidoptera assessed as vulnerable.
Lasiocampids Small lappet moth (Phyllodesma ilicifolia)
Swallowtail butterflies
Lycaenids
Nymphalids Species
Subspecies
Skippers Dakota skipper (Hesperia dacotae) Cinquefoil skipper (Pyrgus cirsii)
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 Erpetogomphus lampropeltis lampropeltis
Coenagrionids Species
Subspecies
Aeshnids
Libellulids
Other Odonata species
Other arthropod species
See also 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
References