As of July 2016, the
International Union for Conservation of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natur ...
(IUCN) lists 5278
data deficient
A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily ...
invertebrate
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...
species.
29% of all evaluated invertebrate species are listed as data deficient.
The IUCN also lists 57 invertebrate subspecies as data deficient.
No subpopulations of invertebrates have been evaluated by the IUCN.
This is a complete list of data deficient invertebrate species and subspecies as evaluated by the IUCN.
Nemertea
Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of 1300 known species. Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many h ...
species
*''
Argonemertes stocki
''Argonemertes stocki'' is a species of nemertean worms in the family Prosorhochmidae that is endemic to Australia, and is only known from one specimen found in 1972 in the New England National Park, New South Wales. It was found under a log in d ...
''
Annelids
The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecolo ...
Onychophora
Onychophora (from grc, ονυχής, , "claws"; and , , "to carry"), commonly known as velvet worms (due to their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, ''Peripatus' ...
*''
Mesoperipatus tholloni
''Mesoperipatus'' is a monospecific genus of velvet worm in the Peripatidae family, containing a single species ''Mesoperipatus tholloni''. It is found in Gabon, making it the only known species of velvet worm in the tropics of Africa, and the on ...
''
Molluscs
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...
There are 1988 mollusc species and 40 mollusc subspecies assessed as data deficient.
Gastropods
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. ...
There are 1526 gastropod species and 37 gastropod subspecies assessed as data deficient.
Vetigastropoda
Vetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically the Vetigastropoda are sometimes treated as an order, although they are treated as an unranked clade in Bou ...
*''
Teinostoma fernandesi
''Teinostoma fernandesi'' is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Tornidae.Williams S. T., Karube S. & Ozawa T. (September 2008) "Molecular systematics of Vetigastropoda: Trochidae, Turbinid ...
''
*''
Teinostoma funiculatum
''Teinostoma funiculatum'' is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Tornidae.Williams S. T., Karube S. & Ozawa T. (September 2008) "Molecular systematics of Vetigastropoda: Trochidae, Turbinidae ...
''
Stylommatophora
Stylommatophora includes the majority of land snails and slugs. There are 392 species and 32 subspecies in the order Stylommatophora assessed as data deficient.
= Partulids
=
= Subulinids
=
Species
Subspecies
*''
Opeas nothapalinus crenatum''
*''
Pseudoglessula leroyi fasciata''
= Achatinellids
=
= Endodontids
=
= Charopids
=
= Helicarionids
=
= Orthalicids
=
= Euconulids
=
= Rhytidids
=
= Streptaxids
=
Species
Subspecies
= Zonitids
=
= Pupillids
=
= Polygyrids
=
Species
Subspecies
= Helminthoglyptids
=
Species
*
Shasta sideband
The Shasta sideband (''Monadenia troglodytes'') is a species of gastropod in the subfamily Monadeniinae.MolluscaBase eds. (2021). MolluscaBase. Monadenia troglodytes troglodytes Hanna & A.G. Smith, 1933. Accessed through: World Register of Marin ...
(''Monadenia troglodytes'')
Subspecies
= Camaenids
=
= Lauriids
=
= Vertiginids
=
= Bradybaenids
=
Species
Subspecies
*''
Euhadra scaevola mikawa''
= Helicids
=
= Hygromiids
=
= Enids
=
=Other Stylommatophora
=
Species
Subspecies
*
Idaho banded mountain snail (''Oreohelix idahoensis idahoensis'')
*
Carinated striate banded mountain snail (''Oreohelix strigosa goniogyra'')
Littorinimorpha
Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails ( marine species), but also including some freshwater snails ( aquatic species) and land snails ( terrestrial species).Bouchet P. & Rocroi J.-P. (Ed.); Fr ...
There are 565 species and one subspecies in the order Littorinimorpha assessed as data deficient.
= Strombids
=
*''
Ophioglossolambis violacea
''Ophioglossolambis violacea'' is a species of large sea snail, a marine gastropod mollusk in the family Strombidae family, the true conchs and their allies.Bouchet, P. (2012). Ophioglossolambis violacea. Accessed through: World Register of M ...
''
= Pomatiids
=
= Hydrobiids
=
= Cochliopids
=
= Bithyniids
=
Species
Subspecies
*''
Gabbiella humerosa tanganyicensis''
= Moitessieriids
=
= Assimineids
=
= Pomatiopsids
=
= Lithoglyphids
=
= Amnicolids
=
= Stenothyrids
=
= Iravadiids
=
= Truncatellids
=
Sorbeoconcha
Sorbeoconcha is a taxonomic clade of snails, i.e. gastropods, mainly marine species with gills and opercula, within the clade Caenogastropoda.
The taxon Sorbeoconcha was named by Winston Ponder and David R. Lindberg in 1997.
Taxonomy
1997 taxo ...
There are 97 species and one subspecies in the order Sorbeoconcha assessed as data deficient.
= Batillarids
=
*''
Batillaria mutata
''Batillaria mutata'' is a species of small mudflat saltwater snail, a marine gastropod mollusk in the family Batillariidae, the horn snails.
Distribution
This species is endemic to Ecuador
Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ...
''
= Pleurocerids
=
= Melanopsids
=
= Semisulcospirids
=
*
Oasis juga (''Juga laurae'')
= Thiarids
=
= Pachychilids
=
= Paludomids
=
Species
Subspecies
*''
Cleopatra bulimoides pauli
Cleopatra VII Philopator ( grc-gre, Κλεοπάτρα Φιλοπάτωρ}, "Cleopatra the father-beloved"; 69 BC10 August 30 BC) was Queen of the Ptolemaic Kingdom of Egypt from 51 to 30 BC, and its last active ruler.She was also ...
''
Architaenioglossa
There are 106 species and one subspecies in the order Architaenioglossa assessed as data deficient.
= Neocyclotids
=
= Cyclophorids
=
Species
Subspecies
*''
Chamalychaeus itonis nakashimai
''Chamalycaeus'' is a genus of tropical land snails with an operculum, terrestrial gastropod mollusks in the family Alycaeidae. MolluscaBase eds. (2021). MolluscaBase. Chamalycaeus Möllendorff, 1897. Accessed through: World Register of Marine ...
''
= Pupinids
=
= Diplommatinids
=
= Aciculids
=
= Viviparids
=
= Ampullariids
=
Lower Heterobranchia species
Cycloneritimorpha
Cycloneritida (nerites and false-limpets) is an order of land snails, freshwater snails, and sea snails.MolluscaBase eds. (2020). MolluscaBase. Cycloneritida. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aph ...
There are 30 species and two subspecies in the order Cycloneritimorpha assessed as data deficient.
= Helicinids
=
Species
Subspecies
*''
Pleuropoma zigzac ponapense''
*''
Pleuropoma zigzac zigzac
''Pleuropoma'' is a genus of land snails with an operculum. It is a genus of terrestrial gastropod mollusks in the subfamily Helicininae of the family Helicinidae.MolluscaBase eds. (2021). MolluscaBase. Pleuropoma Möllendorff, 1893. Accessed ...
''
= Hydrocenids
=
= Neritids
=
Hygrophila species
There are 197 Hygrophila species assessed as data deficient.
= Physids
=
= Acroloxids
=
= Planorbids
=
= Lymnaeids
=
= Chilinids
=
= Latiids
=
*''
Latia lateralis
''Latia lateralis'' is a species of small freshwater snail or limpet, an aquatic gastropod mollusc in the family Latiidae.
Distribution
This species is endemic to the North Island
The North Island, also officially named Te Ika-a-Māui, ...
''
Neogastropoda
Neogastropoda is an order of sea snails, both freshwater and marine gastropod molluscs.
Description
The available fossil record of Neogastropoda is relatively complete, and supports a widely accepted evolutionary scenario of an Early Cre ...
There are 113 species in the order Neogastropoda assessed as data deficient.
= Turrids
=
= Marginellids
=
= Buccinids
=
= Muricids
=
= Conids
=
Eupulmonata
Eupulmonata is a taxonomic clade of air-breathing snails. The great majority of this group are land snails and slugs, but some are marine and some are saltmarsh snails that can tolerate salty conditions.
Linnean taxonomy
*Suborder Eupulmonata H ...
Archaeopulmonata
*''
Salinator sanchezi''
*''
Salinator swatowensis
''Salinator'' is a genus of small, air-breathing, terrestrial or semi- marine snails with an operculum, pulmonate gastropod molluscs in the subfamily Salinatorinae of the family Amphibolidae. MolluscaBase eds. (2022). MolluscaBase. Salinat ...
''
Bivalvia
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, biv ...
There are 171 species and three subspecies in the class Bivalvia assessed as data deficient.
Pectinida
*''
Nodipecten magnificus''
Unionida
There are 95 species in the order Unionoida assessed as data deficient.
= Margaritiferids
=
*''
Margaritifera dahurica''
*''
Margaritifera laevis
''Margaritifera'' is a genus of freshwater mussels, aquatic bivalve molluscs in the family Margaritiferidae, the freshwater pearl mussels. MolluscaBase eds. (2021). MolluscaBase. Margaritifera Schumacher, 1815. Accessed through: World Registe ...
''
= Unionids
=
= Hyriids
=
= Iridinids
=
= Mycetopodids
=
*''
Anodontites elongatus
''Anodontites'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Mycetopodidae. ''Anodontites'' are present in South
South is one of the cardinal directions or Points of the compass, compass points. The direction is t ...
''
*''
Anodontites trigonus
''Anodontites'' is a genus of freshwater mussels, aquatic bivalve mollusks in the family Mycetopodidae. ''Anodontites'' are present in South
South is one of the cardinal directions or Points of the compass, compass points. The direction is ...
''
Veneroida
There are 74 species and three subspecies in the order Veneroida assessed as data deficient.
= Dreissenids
=
*''
Dreissena iconica''
= Sphaeriids
=
Species
Subspecies
*''
Musculium hartmanni naivashaens
''Musculium'' is a genus of small freshwater clams, aquatic bivalve molluscs in the family Sphaeriidae
Sphaeriidae is a family of small to minute freshwater bivalve molluscs in the order Sphaeriida. In the US, they are commonly known as p ...
''
= Cyrenids
=
Species
Subspecies
*''
Corbicula fluminalis cunningtoni
''Corbicula'' is a genus of freshwater and brackish water clams, aquatic bivalve mollusks in the family Cyrenidae, the basket clams.Gofas, S. (2015). Cyrenidae Gray, 1847. In: MolluscaBase (2015). Accessed through: World Register of Marine Sp ...
''
*''
Corbicula fluminalis tanganyicensis
''Corbicula'' is a genus of freshwater and brackish water clams, aquatic bivalve mollusks in the family Cyrenidae, the basket clams.Gofas, S. (2015). Cyrenidae Gray, 1847. In: MolluscaBase (2015). Accessed through: World Register of Marine ...
''
= Donacids
=
= Solecurtids
=
*''
Novaculina siamensis''
Mytilida
*''
Sinomytilus morrisoni''
Cephalopods
A cephalopod is any member of the molluscan Taxonomic rank, class Cephalopoda (Greek language, Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral symm ...
There are 291 cephalopod species assessed as data deficient.
Idiosepiida
Idiosepiidae is a family of mollusc in the class Cephalopoda. This family appears to be related to the cuttlefish in the order Sepiida and the bobtail squid in the order Sepiolida but the exact placement of this family within the Decapodifo ...
Octopuses
An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefis ...
There are 34 octopus species assessed as data deficient.
= Umbrella octopuses
=
= Argonautids
=
*''
Argonauta cornuta''
= Cirroteuthids
=
= Grimpoteuthis species
=
Sepioloida
There are 142 species in Sepioloida assessed as data deficient.
= Sepiids
=
= Sepiolids
=
= Sepiadariids
=
Oegopsina species
There are 104 Oegopsina species assessed as data deficient.
= Mastigoteuthidae
=
= Enoploteuthids
=
= Hooked squids
=
= Chiroteuthids
=
= Cranchiids
=
= Octopoteuthids
=
=Other Oegopsina species
=
Bathyteuthida
Cnidaria
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in Fresh water, freshwater and Marine habitats, marine environments, predominantly the latter.
Their distinguishing feature is cnidocyt ...
There are 166 species in the phylum Cnidaria assessed as data deficient.
Hydrozoa
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specializ ...
*''
Millepora braziliensis''
*''
Millepora nitida''
Anthozoa
Anthozoa is a subphylum of marine invertebrates which includes the sea anemones, stony corals and soft corals. Adult anthozoans are almost all attached to the seabed, while their larvae can disperse as part of the plankton. The basic unit of t ...
There are 164 species in the class Anthozoa assessed as data deficient.
Tube-dwelling anemones
*''
Arachnanthus oligopodus
''Arachnanthus'' is a genus of tube-dwelling anemones in the family Arachnactidae. Members of the genus are found worldwide.
Characteristics
''Arachnanthus'' species live in parchment-like tubes which are buried in muddy or sandy sediment. Some ...
''
Zoanthinaria
Actinaria
Alcyonacea
Alcyonacea, or soft corals, are an order of corals. In addition to the fleshy soft corals, the order Alcyonacea now contains all species previously known as "gorgonian corals", that produce a more or less hard skeleton, though quite different f ...
Scleractinia
Scleractinia, also called stony corals or hard corals, are marine animals in the phylum Cnidaria that build themselves a hard skeleton. The individual animals are known as polyps and have a cylindrical body crowned by an oral disc in which a mo ...
There are 145 species in the order Scleractinia assessed as data deficient.
= Acroporids
=
= Oculinids
=
=
Poritids
Poritidae is a family of stony corals. Members of the family are colonial hermatypic (reef-building) corals. They are variable in size and form but most are massive, laminar or ramose as well as branching and encrusting. The corallites are compa ...
=
= Mussids
=
= Pectiniids
=
= Siderastreids
=
=Other Scleractinia species
=
Arthropods
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and cuticle made of chitin, oft ...
There are 2875 arthropod species and 17 arthropod subspecies assessed as data deficient.
Arachnids
Arachnida () is a class of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip spiders and vine ...
Branchiopoda
*''
Streptocephalus kargesi
''Streptocephalus kargesi'' is a species of crustacean in the family Streptocephalidae. It is endemic to Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is ...
''
Millipedes
Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a resu ...
Maxillopoda
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can ...
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
''Armatobalanus nefrens'' is a species of barnacle in the family Archaeobalanidae. It is endemic to the United States, where it is found as far north as Monterey Bay. It lives embedded in the corals '' Stylaster californicus'' and '' Errinopora p ...
''
*''
Balanus aquila''
Calanoida
There are 19 species in the order Calanoida assessed as data deficient.
= Diaptomids
=
= Temorids
=
*''
Epischura massachusettsensis
''Epischura massachusettsensis'' is a species of copepod in the family Temoridae, endemic to Massachusetts. It is listed as Data Deficient on the IUCN Red List. Adult males are around long.
Taxonomic history
''E. massachusettsensis'' was fi ...
''
Harpacticoida
*''
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 of crustaceans that includes woodlice and their relatives. Isopods live in the sea, in fresh water, or on land. All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, an ...
*''
Echinodillo cavaticus
''Echinodillo cavaticus'', the Flinders Island cave slater, is a species of woodlouse in the family Armadillidae. It is endemic to caves on Flinders Island, Tasmania.
References
Crustaceans of Australia
Animals described in 1963
Wood ...
''
*''
Styloniscus sp. nov.''
Decapods
The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is es ...
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
Lobsters are a family (Nephropidae, synonym Homaridae) of marine crustaceans. They have long bodies with muscular tails and live in crevices or burrows on the sea floor. Three of their five pairs of legs have claws, including the first pair, ...
=
= Slipper lobsters
=
= Reef lobsters
=
=Other decapod species
=
Insects
Insects (from Latin ') are pancrustacean 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 ...
There are 1702 insect species assessed as data deficient.
Blattodea
Blattodea is an order of insects that contains cockroaches and termites. Formerly, termites were considered a separate order, Isoptera, but genetic and molecular evidence suggests they evolved from within the cockroach lineage, cladistically m ...
*''
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 – grass ...
There are 50 species in the order Orthoptera assessed as data deficient.
= Acridids
=
= Tettigoniids
=
= Phaneropterids
=
=Other Orthoptera species
=
Hymenoptera
There are 316 species in the order Hymenoptera assessed as data deficient.
= Colletids
=
= Melittids
=
= Apids
=
= Halictids
=
= Andrenids
=
= Megachilids
=
Mantises
Lepidoptera
Lepidoptera comprises moths and butterflies. There are 87 species in the order Lepidoptera assessed as data deficient.
= Pyralids
=
= Swallowtail butterflies
=
= Lycaenids
=
= Nymphalids
=
= Skippers
=
=Other Lepidoptera species
=
Beetles
Beetles are insects that form the Taxonomic rank, order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, Elytron, elytra, distinguishing them from most other insects. The Coleoptera, wit ...
There are 377 beetle species assessed as data deficient.
= Geotrupids
=
=
Longhorn beetles
The longhorn beetles (Cerambycidae), also known as long-horned or longicorns, are a large family of beetles, with over 35,000 species described. Most species are characterized by extremely long antennae, which are often as long as or longer tha ...
=
=
Click beetles
Elateridae or click beetles (or "typical click beetles" to distinguish them from the related families Cerophytidae and Eucnemidae, which are also capable of clicking) are a family of beetles. Other names include elaters, snapping beetles, s ...
=
= Erotylids
=
= Scarabaeids
=
=Other beetle species
=
Odonata
Odonata is an order of flying insects that includes the dragonflies and damselflies. Members of the group first appeared during the Triassic, though members of their total group, Odonatoptera, first appeared in Late Carboniferous.
The two co ...
Odonata includes dragonflies and damselflies. There are 868 species in the order Odonata assessed as data deficient.
= Platystictids
=
= Chlorogomphids
=
= Argiolestids
=
= Chlorocyphids
=
= Isostictids
=
= Platycnemidids
=
= Megapodagrionids
=
= Gomphids
=
= Cordulegastrids
=
= Corduliids
=
= Calopterygids
=
= Coenagrionids
=
= Euphaeids
=
= Macromiids
=
= Lestids
=
= Aeshnids
=
= Libellulids
=
= Polythorids
=
=Other Odonata species
=
Echinoderms
An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the ...
There are 244 echinoderm species assessed as data deficient.
Sea cucumbers
Sea cucumbers are echinoderms from the class Holothuroidea (). They are marine animals with a leathery skin and an elongated body containing a single, branched gonad. Sea cucumbers are found on the sea floor worldwide. The number of holothuri ...
See also
*
Lists of IUCN Red List data deficient species
*
List of least concern invertebrates
*
List of near threatened invertebrates
*
List of vulnerable invertebrates
*
List of endangered invertebrates
*
List of critically endangered invertebrates
*
List of recently extinct invertebrates
References
*Invertebrates
Data deficient invertebrates
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