As of July 2016, the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...

(IUCN) lists 2875 data deficient

arthropod Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an arthropod exoskeleton, exoskeleton with a cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate, a body with differentiated (Metam ...

species. 30% of all evaluated arthropod species are listed as data deficient. The IUCN also lists 17 arthropod subspecies as data deficient. No subpopulations of arthropods have been evaluated by the IUCN. This is a complete list of data deficient arthropod species and subspecies as evaluated by the IUCN.

Arachnids

Branchiopoda Branchiopoda, from Ancient Greek βράγχια (''bránkhia''), meaning "gill", and πούς (''poús''), meaning "foot", is a class (biology), class of crustaceans. It comprises Anostraca, fairy shrimp, clam shrimp, Diplostraca (or Cladocera), ...

*'' Streptocephalus kargesi''

Millipedes

Maxillopoda

Maxillopoda includes barnacles, copepods and a number of related animals. There are 22 species in the class Maxillopoda assessed as data deficient.

Sessilia

*'' Armatobalanus nefrens'' *'' Balanus aquila''

Calanoida

There are 19 species in the order Calanoida assessed as data deficient.

Diaptomids

Temorids

*'' Epischura massachusettsensis''

Harpacticoida Harpacticoida is an Order (biology), order of copepods, in the subphylum Crustacean, Crustacea. This order comprises 463 genus, genera and about 3,000 species; its members are benthic copepods found throughout the world in the marine environment ...

*'' Thermomesochra reducta''

Xiphosura

Malacostracans

Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 1130 malacostracan species and 17 malacostracan subspecies assessed as data deficient.

Isopods Isopoda is an Order (biology), order of crustaceans. Members of this group are called isopods and include both Aquatic animal, aquatic species and Terrestrial animal, terrestrial species such as woodlice. All have rigid, segmented exoskeletons ...

*'' Echinodillo cavaticus'' *'' Styloniscus'' sp. nov.

Decapods The Decapoda or decapods, from Ancient Greek δεκάς (''dekás''), meaning "ten", and πούς (''poús''), meaning "foot", is a large order (biology), order of crustaceans within the class Malacostraca, and includes crabs, lobsters, crayfis ...

There are 1128 decapod species and 17 decapod subspecies assessed as data deficient.

Parastacids

Gecarcinucids

Atyids

Species Subspecies

Cambarids

Potamonautids

Pseudothelphusids

Potamids

Palaemonids

Species Subspecies

Trichodactylids

Spiny lobsters

Lobsters

Slipper lobsters

Reef lobsters

Other decapod species

Insects Insects (from Latin ') are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed ...

There are 1702 insect species assessed as data deficient.

Blattodea Blattodea is an order (biology), order of insects that contains cockroaches and termites. Formerly, termites were considered a separate order, Isoptera, but genetics, genetic and molecular evidence suggests they evolved from within the cockroach ...

*'' Miriamrothschildia zonatus''

Orthoptera Orthoptera () is an order of insects that comprises the grasshoppers, locusts, and crickets, including closely related insects, such as the bush crickets or katydids and wētā. The order is subdivided into two suborders: Caelifera – gras ...

There are 50 species in the order Orthoptera assessed as data deficient.

Acridids

Tettigoniids

Phaneropterids

Other Orthoptera species

Hymenoptera Hymenoptera is a large order of insects, comprising the sawflies, wasps, bees, and ants. Over 150,000 living species of Hymenoptera have been described, in addition to over 2,000 extinct ones. Many of the species are parasitic. Females typi ...

There are 316 species in the order Hymenoptera assessed as data deficient.

Colletids

Melittids

Apids

Halictids

Andrenids

Megachilids

Mantises

Lepidoptera Lepidoptera ( ) or lepidopterans is an order (biology), order of winged insects which includes butterflies and moths. About 180,000 species of the Lepidoptera have been described, representing 10% of the total described species of living organ ...

Lepidoptera comprises moths and butterflies. There are 87 species in the order Lepidoptera assessed as data deficient.

Other Lepidoptera species

Beetles Beetles are insects that form the Taxonomic rank, order Coleoptera (), in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 40 ...

There are 377 beetle species assessed as data deficient.

Other beetle species

Odonata Odonata is an order of predatory flying insects that includes the dragonflies and damselflies (as well as the '' Epiophlebia'' damsel-dragonflies). The two major groups are distinguished with dragonflies (Anisoptera) usually being bulkier with ...

Odonata includes dragonflies and damselflies. There are 868 species in the order Odonata assessed as data deficient.

Other Odonata species

References

*Arthropods Data deficient arthropods Data deficient arthropods {{bots, deny=BG19bot,Yobot