In July 2016, the International Union for Conservation of Nature (IUCN) listed 4069 least concern arthropod species. Of all evaluated arthropod species, 43% are listed as least concern. The IUCN also lists 27 arthropod subspecies as least concern.
No subpopulations of arthropods have been evaluated by the IUCN.
This is a complete list of least concern arthropod species and subspecies as evaluated by the IUCN.
Centipedes Mecistocephalus angusticeps
Arachnids There are 21 arachnid species assessed as least concern.
Spiders
Argyrodes rostratus Fimbriated striated burrowing spider (Chilobrachys fimbriatus) Eastern Indian striated burrowing spider (Chilobrachys hardwicki) Cryptothele alluaudi Damastes validus Adanson's house jumper (Hasarius adansoni) Heliophanus activus Heteroonops tetraspinosus Microdipoena elsae Myrmarachne constricta Noideattella assumptia Pelicinus marmoratus Indian ornamental (Poecilotheria regalis) Pritha heikkii Rhacocnemis guttatus Selenops secretus
Schizomida Ovozomus similis
Pseudoscorpions
Aldabrinus aldabrinus Feaella affinis Geogarypus ocellatus Oratemnus brevidigitatus
Branchiopoda Giant fairy shrimp (Branchinecta gigas)
Millipedes
Doratogonus annulipes Doratogonus castaneus Doratogonus cristulatus Doratogonus falcatus Doratogonus flavifilis Doratogonus krausi Doratogonus levigatus Doratogonus montanus Doratogonus rugifrons Doratogonus xanthopus
Malacostracans Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 1193 malacostracan species and 15 malacostracan subspecies assessed as least concern.
Isopods Thermosphaeroma subequalum
Decapods There are 1191 decapod species and 15 decapod subspecies assessed as least concern.
Parastacids
Orambato (Astacoides granulimanus) Astacopsis franklinii Astacopsis tricornis Cherax bicarinatus Smooth marron (Cherax cainii) Cusped crayfish (Cherax cuspidatus) Slender yabby (Cherax dispar) Koonac (Cherax preissii) Redclaw (Cherax quadricarinatus) Gilgies (Cherax quinquecarinatus) Cherax rhynchotus Engaeus cisternarius Engaeus cunicularius Engaeus cymus Engaeus fossor Engaeus fultoni Engaeus hemicirratulus Engaeus lengana Engaeus leptorhynchus Engaeus lyelli Engaeus mairener Engaeus merosetosus Engaeus orientalis Engaeus quadrimanus Engaeus sericatus Engaeus strictifrons Engaeus tayatea Engaeus tuberculatus Engaewa similis Engaewa subcoerulea Euastacus australasiensis Euastacus dangadi Gippsland spiny crayfish (Euastacus kershawi) Euastacus neohirsutus Euastacus reductus Euastacus spinifer Euastacus valentulus Euastacus yanga Geocharax tasmanicus Ombrastacoides brevirostris Ombrastacoides decemdentatus Ombrastacoides huonensis Ombrastacoides leptomerus Paranephrops planifrons Paranephrops zealandicus Parastacus pilimanus Spinastacoides catinipalmus Spinastacoides inermis Spinastacoides insignis
Gecarcinucids
Adeleana chapmani Arachnothelphusa kadamaiana Arachnothelphusa rhadamanthysi Arachnothelphusa terrapes Austrothelphusa agassizi Austrothelphusa angustifrons Austrothelphusa raceki Austrothelphusa transversa Bakousa sarawakensis Balssiathelphusa cursor Barythelphusa cunicularis Barythelphusa guerini Barythelphusa jacquemontii Ceylonthelphusa rugosa Ceylonthelphusa sentosa Ceylonthelphusa soror Currothelphusa asserpes Cylindrothelphusa steniops Esanthelphusa chiangmai Esanthelphusa denchaii Esanthelphusa dugasti Esanthelphusa fangensis Esanthelphusa nimoafi Esanthelphusa phetchaburi Gecarcinucus jaquemontii Geelvinkia darnei Geithusa lentiginosa Heterothelphusa insolita Holthuisana alba Holthuisana biroi Holthuisana boesemani Holthuisana subconvexa Irmengardia pilosimana Lamella lamellifrons Mahatha adonis Mahatha ornatipes Maydelliathelphusa harpax Maydelliathelphusa lugubris Maydelliathelphusa masoniana Mekhongthelphusa brandti Niasathelphusa wirzi Oziothelphusa ceylonensis Oziothelphusa minneriyaensis Parathelphusa bogorensis Parathelphusa celebensis Parathelphusa ferruginea Parathelphusa lokaensis Parathelphusa maculata Parathelphusa malaysiana Parathelphusa manguao Parathelphusa oxygona Parathelphusa pallida Parathelphusa pareparensis Parathelphusa pulcherrima Parathelphusa rasilis Parathelphusa sorella Parathelphusa valida Perbrinckia scansor Perithelphusa borneensis Perithelphusa lehi Phricotelphusa amnicola Phricotelphusa deharvengi Panda crab (Phricotelphusa sirindhorn) Salangathelphusa brevicarinata Sartoriana blanfordi Sartoriana spinigera Sayamia bangkokensis Sayamia germaini Sayamia sexpunctata Siamthelphusa acutidens Siamthelphusa improvisa Siamthelphusa paviei Siamthelphusa retimanus Siamthelphusa transversa Siamthelphusa variegata Somanniathelphusa brevipodum Somanniathelphusa dangi Somanniathelphusa gaoyunensis Somanniathelphusa grayi Somanniathelphusa pax Somanniathelphusa plicatus Spiralothelphusa hydrodroma Sundathelphusa aspera Sundathelphusa boex Sundathelphusa cassiope Sundathelphusa cavernicola Sundathelphusa grapsoides Sundathelphusa hades Sundathelphusa tenebrosa Sundathelphusa urichi Sundathelphusa vedeniki Syntripsa flavichela Syntripsa matannensis Terrathelphusa kuhli Terrathelphusa loxophthalma Terrathelphusa ovis Thelphusula baramensis Thelphusula dicerophilus Thelphusula granosa Thelphusula hulu Thelphusula luidana Thelphusula sabana Thelphusula styx Thelphusula tawauensis Travancoriana convexa Travancoriana schirnerae
Atyids Species
Atya africana Atya crassa Atya dressleri Atya gabonensis Atya innocous Atya lanipes Atya margaritacea Atya scabra Atyaephyra acheronensis Atyaephyra desmarestii Atyaephyra orientalis Atyaephyra stankoi Atyaephyra thyamisensis Atyella brevirostris Atyoida pilipes Atyoida serrata Atyopsis moluccensis Atyopsis spinipes Australatya striolata Caridella cunningtoni Caridella minuta Caridella paski Caridina angulata Caridina appendiculata Caridina babaulti Caridina babaultioides Caridina bakoensis Caridina brachydactyla Caridina brevicarpalis Caridina bruneiana Caridina buehleri Caridina calmani Bee shrimp (Caridina cantonensis) Caridina celebensis Caridina chauhani Caridina chishuiensis Caridina cognata Caridina confusa Caridina demani Caridina disparidentata Caridina elongopoda Caridina endehensis Caridina evae Caridina excavatoides Caridina fernandoi Caridina fijiana Caridina fossarum Caridina gaesumi Caridina gracilipes Caridina gracilirostris Caridina gracillima Caridina grandirostris Caridina hova Caridina imitatrix Caridina indistincta Caridina isaloensis Caridina jalihali Caridina johnsoni Caridina kempi Caridina lanceifrons Caridina laoagensis Caridina leucosticta Caridina longirostris Caridina mahalona Caridina malayensis Caridina mccullochi Caridina medifolia Caridina mertoni Caridina moeri Caridina multidentata Caridina natalensis Caridina natarajani Caridina neglecta Caridina nilotica Caridina novaecaledoniae Caridina papuana Caridina pareparensis Caridina parvidentata Caridina peninsularis Caridina pingi Caridina prashadi Caridina pristis Caridina propinqua Caridina rapaensis Caridina rubella Caridina serratirostris Caridina shenoyi Caridina similis Caridina simoni Caridina spinula Caridina sulawesi Caridina sumatrensis Caridina temasek Caridina thambipillai Caridina togoensis Caridina typus Caridina villadolidi Caridina weberi Caridina xiphias Caridina yunnanensis Caridina zebra Caridina zeylanica Caridinides wilkinsi Caridinopsis chevalieri Jonga serrei Limnocaridina iridinae Limnocaridina latipes Limnocaridina parvula Limnocaridina retarius Limnocaridina similis Limnocaridina socius Limnocaridina spinipes Limnocaridina tanganyikae Micratya poeyi Neocaridina denticulata Neocaridina fukiensis Neocaridina gracilipoda Neocaridina hofendopoda Neocaridina iriomotensis Neocaridina ishigakiensis Neocaridina palmata Neocaridina spinosa Paracaridina guizhouensis Paratya australiensis Paratya boninensis Paratya bouvieri Paratya caledonica Paratya compressa Paratya curvirostris Paratya howensis Paratya improvisa Paratya intermedia Paratya typa Parisia gracilis Parisia unguis Potimirim brasiliana Potimirim glabra Potimirim potimirim Sinodina bispinosa Sinodina yui Troglocaris anophthalmus Typhlatya campecheae Typhlatya mitchelli Mona cave shrimp (Typhlatya monae) Typhlatya pearsei
Subspecies
Caridina babaulti basrensis Caridina babaultioides babaultioides Caridina indistincta indistincta Caridina isaloensis grandidieri Caridina isaloensis isaloensis Neocaridina denticulata denticulata Neocaridina palmata meridionalis Neocaridina palmata palmata
Cambarids Species and subspecies
Bottlebrush crayfish (Barbicambarus cornutus) Angular dwarf crawfish (Cambarellus lesliei) Acocil (Cambarellus montezumae) Aransas dwarf crawfish (Cambarellus ninae) Cambarellus occidentalis Swamp dwarf crayfish (Cambarellus puer) Cajun dwarf crayfish (Cambarellus shufeldtii) Brazos dwarf crayfish (Cambarellus texanus) Cambarellus zempoalensis Thornytail crayfish (Cambarus acanthura) Acuminate crayfish (Cambarus acuminatus) Angled crayfish (Cambarus angularis) Mitten crayfish (Cambarus asperimanus) Appalachian brook crayfish (Cambarus bartonii) Bluegrass crayfish (Cambarus batchi) Longclaw crayfish (Cambarus buntingi) Rock crayfish (Cambarus carinirostris) Red burrowing crayfish (Cambarus carolinus) Boston Mountains crayfish (Cambarus causeyi) New river crayfish (Cambarus chasmodactylus) Chauga river crayfish (Cambarus chaugaensis) Coosa crayfish (Cambarus coosae) Hairyfoot crayfish (Cambarus crinipes) Apalachicola cave crayfish (Cambarus cryptodytes) Cumberland crayfish (Cambarus cumberlandensis) Carolina ladle crayfish (Cambarus davidi) Valley flame crayfish (Cambarus deweesae) Devil crawfish (Cambarus diogenes) Boxclaw crayfish (Cambarus distans) Upland burrowing crayfish (Cambarus dubius) Tallapoosa crayfish (Cambarus englishi) Cambarus friaufi Linear cobalt crayfish (Cambarus gentryi) Little Tennessee river crayfish (Cambarus georgiae) Tanback crayfish (Cambarus girardianus) Twospot crayfish (Cambarus graysoni) Slackwater crayfish (Cambarus halli) Prickly cave crayfish (Cambarus hamulatus) Hiwassee crayfish (Cambarus hiwasseensis) Rocky river crayfish (Cambarus hobbsorum) Chattahoochee crayfish (Cambarus howardi) Cambarus hubbsi Sandhills spiny crayfish (Cambarus hystricosus) Carolina foothills crayfish (Cambarus johni) Variable crayfish (Cambarus latimanus) Longnose crayfish (Cambarus longirostris) Atlantic slope crayfish (Cambarus longulus) Painted devil crayfish (Cambarus ludovicianus) Freckled crayfish (Cambarus maculatus) Greensaddle crayfish (Cambarus manningi) Rusty grave digger (Cambarus miltus) Monongahela crayfish (Cambarus monongalensis) Knotty burrowing crayfish (Cambarus nodosus) Sloped crayfish (Cambarus obstipus) Ortmann's mudbug (Cambarus ortmanni) Mountain midget crayfish (Cambarus parvoculus) Paintedhand mudbug (Cambarus polychromatus) French broad crayfish (Cambarus reburrus) Sickle crayfish (Cambarus reduncus) Pine savannah crayfish (Cambarus reflexus) Big water crayfish (Cambarus robustus) Depression crayfish (Cambarus rusticiformis) Teays river crayfish (Cambarus sciotensis) Chattooga river crayfish (Cambarus scotti) Triangleclaw crayfish (Cambarus sphenoides) Ambiguous crayfish (Cambarus striatus) Cavespring crayfish (Cambarus tenebrosus) Little brown mudbug (Cambarus thomai) Blackbarred crayfish (Cambarus unestami) Lavender burrowing crayfish (Fallicambarus byersi) Timberlands burrowing crayfish (Fallicambarus caesius) Texas prairie crayfish (Fallicambarus devastator) Digger crayfish (Fallicambarus fodiens) Houston burrowing crayfish (Fallicambarus houstonensis) Big thicket burrowing crayfish (Fallicambarus kountzeae) Old prairie digger (Fallicambarus macneesei) Saline burrowing crayfish (Fallicambarus strawni) Sabine fencing crayfish (Faxonella beyeri) Blair's fencing crayfish (Faxonella blairi) Ditch fencing crayfish (Faxonella clypeata) Prominence riverlet crayfish (Hobbseus prominens) Redspotted stream crayfish (Orconectes acares) Alabama crayfish (Orconectes alabamensis)