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
Endangered (EN) species are considered to be facing a very high risk of extinction in the wild. 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.
Australobius abbreviatus
Australobius inflatitarsis
Australobius sechellarum
Mecistocephalus megalodon
Seychelles long-legged centipede (Seychellonema gerlachi ) There are 72 arachnid species assessed as endangered.
Other arachnid species [ edit ] 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
Asellus aquaticus carniolicus
Asellus aquaticus cyclobranchialis
Monolistra racovitzai conopyge Species
Subspecies
Niphargus elegans zagrebensis There are 154 decapod species and two decapod subspecies assessed as endangered.
Species
Subspecies
Doimon doichiangdao
Doimon doisutep
Geothelphusa levicervix
Yangmingshan crab (Geothelphusa yangminshan )
Hainanpotamon orientale
Ibanum pilimanus
Indochinamon bhumibol
Indochinamon villosum
Iomon nan
Johora punicea
Stoliczia chaseni Species
Arachnochium kulsiense
Calathaemon holthuisi
Macrobrachium hirtimanus
Macrobrachium minutum
Macrobrachium naso
Macrobrachium poeti
Balcones cave shrimp (Palaemonetes antrorum )
Palaemonetes suttkusi Subspecies
Macrobrachium lamarrei lamarroides Other decapod species [ edit ] There are 343 insect species and 21 insect subspecies assessed as endangered.
Hololeptoblatta minor
Miriamrothschildia aldabrensis
Miriamrothschildia biplagiata
Miriamrothschildia mahensis
Gerlach's cockroach (Nocticola gerlachi )
Theganopteryx lunulata
Theganopteryx minuta There are 91 species and two subspecies in the order Orthoptera assessed as endangered.
Slender restio grasshopper (Betiscoides meridionalis )
Small restio grasshopper (Betiscoides parva )
Robust restio grasshopper (Betiscoides sjostedti )
Jagos monkey grasshopper (Chromomastax jagoi )
Ufipa monkey grasshopper (Euschmidtia fitzgeraldi )
Tanga monkey grasshopper (Euschmidtia tangana )
Arachnocephalus subsulcatus
Ectatoderus aldabrae
Ectatoderus nigriceps
Ectatoderus squamiger
Ornebius stenus
Ornebius syrticus
Parnassos stone grasshopper (Glyphanus obtusus )
Groovy stone grasshopper (Kurtharzia sulcata )
Slender stone grasshopper (Orchamus gracilis )
Karpathos stone grasshopper (Orchamus kaltenbachi )
Chopard's stone grasshopper (Paranocarodes chopardi )
Eastern stone grasshopper (Prionotropis hystrix )
Willemse's stone grasshopper (Prionotropis willemsorum )
Purpurarian stone grasshopper (Purpuraria erna )
Lanzarote stick grasshopper (Purpuraria magna ) Species
Seychelles palm cricket (Metioche bolivari )
Laricis tree cricket (Oecanthus laricis )
Orthoxiphus nigrifrons
Phaeogryllus fuscus
Scottiola salticiformis
Seychelles short-winged cricket (Seychellesia longicercata )
Seychellesia patellifera
Zarceus major Subspecies
Phaloria insularis insularis
Uluguru slender grasshopper (Acanthoxia aculeus )
Tanzanian coast grasshopper (Acteana alazonica )
Uluguru forest edge grasshopper (Afrophlaeoba euthynota )
Rubeho forest edge grasshopper (Afrophlaeoba longicornis )
Nguru forest edge grasshopper (Afrophlaeoba nguru )
Uluguru dusky grasshopper (Aresceutica morogorica )
Usambara dusky grasshopper (Aresceutica subnuda )
Ferdinand's grasshopper (Chorthippus ferdinandi )
Karaman grasshopper (Chorthippus relicticus )
Sicilian cross-backed grasshopper (Dociostaurus minutus )
Seychelles palm grasshopper (Enoplotettix gardineri )
Usambara noble grasshopper (Eupropacris pompalis )
Uvinza grasshopper (Hadrolecocatantops uvinza )
Lila Downs' friar grasshopper (Liladownsia fraile )
Sardinian match grasshopper (Ochrilidia nuragica )
Chelmos mountain grasshopper (Oropodisma chelmosi )
Karavica mountain grasshopper (Oropodisma karavica )
Parnassos mountain grasshopper (Oropodisma parnassica )
Tymphrestos mountain grasshopper (Oropodisma tymphrestosi )
Tymphi mountain grasshopper (Peripodisma tymphii )
Pternoscirtus aldabrae
Dinarian grasshopper (Rammeihippus dinaricus )
Gran Canaria sand grasshopper (Sphingonotus guanchus )
Knotty sand grasshopper (Sphingonotus nodulosus )
Club toothed grasshopper (Stenobothrus clavatus )
Zayante band-winged grasshopper (Trimerotropis infantilis )
Santa Monica Mountains grasshopper (Trimerotropis occidentaloides )
Lompoc grasshopper (Trimerotropis occulens )
Brown false shieldback (Aroegas fuscus )
Big-bellied glandular bush-cricket (Bradyporus macrogaster )
Cyprian red-headed bush-cricket (Bucephaloptera cypria )
Gran Canaria green bush-cricket (Calliphona alluaudi )
Gomera green bush-cricket (Calliphona gomerensis )
Palma green bush-cricket (Calliphona palmensis )
Lesotho meadow katydid (Conocephalus basutoanus )
Striped restio katydid (Conocephalus vaginalis )
Mount Ida marbled bush-cricket (Eupholidoptera astyla )
Spiny marbled bush-cricket (Eupholidoptera spinigera )
Kawanaphila pachomai
Chelmos Greek bush-cricket (Parnassiana chelmos )
Tymphi Greek bush-cricket (Parnassiana tymphiensis )
Tymphrestos Greek bush-cricket (Parnassiana tymphrestos )
Rentz's ambush katydid (Peringueyella rentzi )
Lucas' dark bush-cricket (Pholidoptera lucasi )
Psacadonotus insulanus
Lesina bush-cricket (Rhacocleis buchichii )
Seychelles predatory bush-cricket (Seselphisis visenda )
Jambila seedpod shieldback (Thoracistus jambila )
Seedpod shieldback (Thoracistus semeniphagus )
Inflated seedpod shieldback (Thoracistus thyraeus )
Throscodectes xederoides
Throscodectes xiphos
Adriatic marmored bush-cricket (Zeuneriana marmorata ) Species
Tree winter katydid (Brinckiella arboricola )
Cyprian plump bush-cricket (Isophya mavromoustakisi )
Epiros bright bush-cricket (Poecilimon gracilioides )
Paros bright bush-cricket (Poecilimon paros )
Pindos bright bush-cricket (Poecilimon pindos )
Soulion bright bush-cricket (Poecilimon soulion ) Subspecies
Isophya longicaudata longicaudata Lepidoptera comprises moths and butterflies. There are 51 species in the order Lepidoptera assessed as endangered.
Other Lepidoptera species [ edit ] There are 72 beetle species assessed as endangered.
Ceratophyus martinezi
Ceratophyus rossii
Thorectes balearicus
Thorectes baraudi
Thorectes castillanus
Thorectes catalonicus
Thorectes chersinus
Thorectes coiffaiti
Thorectes distinctus
Thorectes hernandezi
Thorectes hispanus
Thorectes orocantabricus
Thorectes punctatissimus
Thorectes punctatolineatus
Thorectes puncticollis
Thorectes sardous
Thorectes variolipennis
Typhaeus hiostius
Typhaeus momus
Ahermodontus ambrosi
Ateuchus ambiguus
Canthonella gomezi
Yanbaru long-armed scarab beetle (Cheirotonus jambar )
Cryptocanthon altus
Cryptocanthon nebulinus
Cryptocanthon punctatus
Dichotomius eucranioides
Dichotomius schiffleri
Endroedyolus paradoxus
Heptaulacus gadetinus
Shadowy chafer (Mellissius adumbratus )
Nimbus anyerae
Onoreidium howdeni
Proagoderus uluguru
Sarophorus punctatus Other beetle species [ edit ] Odonata includes dragonflies and damselflies. There are 97 species and 19 subspecies in the order Odonata assessed as endangered.
Species
Subspecies
Coeliccia flavicauda masakii
Coeliccia ryukyuensis amamii
Coeliccia ryukyuensis ryukyuensis Species
Subspecies
Asiagomphus amamiensis amamiensis
Asiagomphus amamiensis okinawanus
Stylogomphus ryukyuanus asatol
Stylogomphus ryukyuanus watanabei Species
Subspecies
Matrona basilaris japonica Species
Acanthagrion williamsoni
Aciagrion fasciculare
Coenagriocnemis rufipes
Drepanoneura donnellyi
Mesamphiagrion demarmelsi
Mesamphiagrion gaudiimontanum
Mesamphiagrion nataliae
Mesamphiagrion santainense
Blue-and-orange threadtail (Microneura caligata )
Pseudagrion arabicum
Badplaas sprite (Pseudagrion inopinatum )
Telebasis flammeola Subspecies
Pseudagrion torridum hulae Species
Subspecies
Planaeschna ishigakiana ishigakiana
Planaeschna ishigakiana nagaminei
Planaeschna risi sakishimana Species
Subspecies
Leucorrhinia intermedia ijimai
Orthetrum poecilops miyajimaense
Urothemis thomasi thomasi Species
Subspecies
Chlorogomphus brunneus brunneus
Buchholz' cordulegaster (Cordulegaster helladica buchholzi )
Cordulegaster helladica helladica
Hemicordulia mindana nipponica Other insect species [ edit ]
Mccarthy's plant-louse (Acizzia mccarthyi )
Anisolabis scotti
Giant torrent midge (Edwardsina gigantea )
Seychelles winged stick insect (Graeffea seychellensis )
Sugarfoot moth fly (Nemapalpus nearcticus )
Canary dwarf mantis (Pseudoyersinia canariensis )
Large blue lake mayfly (Tasmanophlebia lacuscoerulei )
^ "IUCN Red List version 2016.1" . The IUCN Red List of Threatened Species . International Union for Conservation of Nature and Natural Resources (IUCN). Archived from the original on 27 June 2014. Retrieved 4 July 2016 .
^ "Limitations of the Data" . The IUCN Red List of Threatened Species . Union for Conservation of Nature and Natural Resources (IUCN). Archived from the original on 7 October 2018. Retrieved 11 January 2016 .
^ "2001 Categories & Criteria (version 3.1)" . The IUCN Red List of Threatened Species . Union for Conservation of Nature and Natural Resources (IUCN). Archived from the original on 8 October 2008. Retrieved 11 January 2016 .