List of endangered invertebrates

Short description: none

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 1163 endangered invertebrate species.[1] Of all evaluated invertebrate species, 6.4% were listed as endangered. The IUCN also lists 36 invertebrate subspecies as endangered.

No subpopulations of invertebrates 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 invertebrates are listed separately. There are 2150 invertebrate species which are endangered or critically endangered.

Additionally 5278 invertebrate species (29% 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 invertebrate species and subspecies as evaluated by the IUCN.

## Contents

* 1 Molluscs
* 1.1 Gastropods
* 1.1.1 Stylommatophora
* 1.1.1.1 Partulids
* 1.1.1.2 Achatinellids
* 1.1.1.3 Cerastids
* 1.1.1.4 Endodontids
* 1.1.1.5 Charopids
* 1.1.1.6 Helicarionids
* 1.1.1.7 Orthalicids
* 1.1.1.8 Euconulids
* 1.1.1.9 Streptaxids
* 1.1.1.10 Camaenids
* 1.1.1.11 Helicids
* 1.1.1.12 Hygromiids
* 1.1.1.13 Other Stylommatophora species
* 1.1.2 Littorinimorpha
* 1.1.2.1 Hydrobiids
* 1.1.2.2 Bithyniids
* 1.1.2.3 Assimineids
* 1.1.2.4 Pomatiopsids
* 1.1.2.5 Other Littorinimorpha species
* 1.1.3 Sorbeoconcha
* 1.1.4 Architaenioglossa
* 1.1.5 Cycloneritimorpha
* 1.1.6 Hygrophila species
* 1.1.6.1 Planorbids
* 1.1.6.2 Lymnaeids
* 1.1.7 Neogastropoda
* 1.1.8 Other gastropod species
* 1.2 Bivalvia
* 1.2.1 Unionida
* 1.2.1.1 Margaritiferids
* 1.2.1.2 Unionids
* 1.2.1.3 Other Unionida species
* 1.2.2 Venerida
* 1.3 Cephalopods
* 2 Cnidaria
* 2.1 Hydrozoa
* 2.2 Anthozoa
* 2.2.1 Sea pens
* 2.2.2 Actinaria
* 2.2.3 Scleractinia
* 3 Arthropods
* 3.1 Centipedes
* 3.2 Arachnids
* 3.2.1 Harvestmen
* 3.2.2 Spiders
* 3.2.3 Other arachnid species
* 3.3 Branchiopoda
* 3.4 Millipedes
* 3.5 Malacostracans
* 3.5.1 Isopods
* 3.5.2 Amphipods
* 3.5.3 Decapods
* 3.5.3.1 Parastacids
* 3.5.3.2 Gecarcinucids
* 3.5.3.3 Atyids
* 3.5.3.4 Cambarids
* 3.5.3.5 Potamonautids
* 3.5.3.6 Potamids
* 3.5.3.7 Palaemonids
* 3.5.3.8 Other decapod species
* 3.6 Insects
* 3.6.1 Blattodea
* 3.6.2 Orthoptera
* 3.6.2.1 Lentulids
* 3.6.2.2 Tetrigids
* 3.6.2.3 Euschmidtiids
* 3.6.2.4 Mogoplistids
* 3.6.2.5 Pamphagids
* 3.6.2.6 Crickets
* 3.6.2.7 Acridids
* 3.6.2.8 Tettigoniids
* 3.6.2.9 Phaneropterids
* 3.6.3 Hymenoptera
* 3.6.4 Lepidoptera
* 3.6.4.1 Swallowtail butterflies
* 3.6.4.2 Lycaenids
* 3.6.4.3 Nymphalids
* 3.6.4.4 Other Lepidoptera species
* 3.6.5 Beetles
* 3.6.5.1 Dytiscids
* 3.6.5.2 Stag beetles
* 3.6.5.3 Geotrupids
* 3.6.5.4 Longhorn beetles
* 3.6.5.5 Scarabaeids
* 3.6.5.6 Other beetle species
* 3.6.6 Odonata
* 3.6.6.1 Platystictids
* 3.6.6.2 Platycnemidids
* 3.6.6.3 Megapodagrionids
* 3.6.6.4 Gomphids
* 3.6.6.5 Calopterygids
* 3.6.6.6 Coenagrionids
* 3.6.6.7 Aeshnids
* 3.6.6.8 Libellulids
* 3.6.6.9 Other Odonata
* 3.6.7 Other insect species
* 4 Echinoderms
* 5 Other invertebrate species
* 6 See also
* 7 References

## Molluscs

There are 507 mollusc species and nine mollusc subspecies assessed as endangered.

### Gastropods

There are 448 gastropod species and seven gastropod subspecies assessed as endangered.

#### Stylommatophora

Stylommatophora includes the majority of land snails and slugs. There are 187 species and two subspecies in the order Stylommatophora assessed as endangered.

##### Partulids

##### Achatinellids

##### Cerastids

##### Endodontids

##### Charopids

##### Helicarionids

##### Orthalicids

Species

Subspecies

* Stock Island tree snail (Orthalicus reses reses)

##### Euconulids

##### Streptaxids

Species

Subspecies

* Tayloria urguessensis subangulata

##### Camaenids

##### Helicids

##### Hygromiids

##### Other Stylommatophora species

#### Littorinimorpha

There are 147 species and three subspecies in the order Littorinimorpha assessed as endangered.

##### Hydrobiids

##### Bithyniids

Species

Subspecies

##### Assimineids

##### Pomatiopsids

##### Other Littorinimorpha species

#### Sorbeoconcha

#### Architaenioglossa

Species

Subspecies

* Bellamya unicolor abyssinicus
* Maizania hildebrandti thikensis

#### Cycloneritimorpha

#### Hygrophila species

There are 22 Hygrophila species assessed as endangered.

##### Planorbids

##### Lymnaeids

#### Neogastropoda

#### Other gastropod species

### Bivalvia

There are 57 species and two subspecies in the class Bivalvia assessed as endangered.

#### Unionida

There are 54 species and two subspecies in the order Unionoida assessed as endangered.

##### Margaritiferids

##### Unionids

Species

Subspecies

* Catspaw (Epioblasma obliquata obliquata)
* Rough rabbitsfoot (Quadrula cylindrica strigillata)

##### Other Unionida species

#### Venerida

### Cephalopods

* Cirroctopus hochbergi
* Opisthoteuthis mero

## Cnidaria

There are 28 species in the phylum Cnidaria assessed as endangered.

### Hydrozoa

* Millepora striata
* Millepora tuberosa

### Anthozoa

There are 26 species in the class Anthozoa assessed as endangered.

#### Sea pens

* Crassophyllum thessalonicae

#### Actinaria

* Paranemonia vouliagmeniensis

#### Scleractinia

## Arthropods

There are 616 arthropod species and 27 arthropod subspecies assessed as endangered.

### Centipedes

### Arachnids

There are 72 arachnid species assessed as endangered.

#### Harvestmen

#### Spiders

#### Other arachnid species

### Branchiopoda

### Millipedes

### Malacostracans

Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 170 malacostracan species and six malacostracan subspecies assessed as endangered.

#### Isopods

Species

Subspecies

#### Amphipods

Species

Subspecies

* Niphargus elegans zagrebensis

#### Decapods

There are 154 decapod species and two decapod subspecies assessed as endangered.

##### Parastacids

##### Gecarcinucids

##### Atyids

##### Cambarids

Species

Subspecies

* Withlocoochee light-fleeing cave crayfish (Procambarus lucifugus lucifugus)

##### Potamonautids

##### Potamids

##### Palaemonids

Species

Subspecies

* Macrobrachium lamarrei lamarroides

##### Other decapod species

### Insects

There are 343 insect species and 21 insect subspecies assessed as endangered.

#### Blattodea

#### Orthoptera

There are 91 species and two subspecies in the order Orthoptera assessed as endangered.

##### Lentulids

##### Tetrigids

##### Euschmidtiids

##### Mogoplistids

##### Pamphagids

##### Crickets

Species

Subspecies

* Phaloria insularis insularis

##### Acridids

##### Tettigoniids

##### Phaneropterids

Species

Subspecies

* Isophya longicaudata longicaudata

#### Hymenoptera

#### Lepidoptera

Lepidoptera comprises moths and butterflies. There are 51 species in the order Lepidoptera assessed as endangered.

##### Swallowtail butterflies

##### Lycaenids

##### Nymphalids

##### Other Lepidoptera species

#### Beetles

There are 72 beetle species assessed as endangered.

##### Dytiscids

##### Stag beetles

##### Geotrupids

##### Longhorn beetles

##### Scarabaeids

##### Other beetle species

#### Odonata

Odonata includes dragonflies and damselflies. There are 97 species and 19 subspecies in the order Odonata assessed as endangered.

##### Platystictids

##### Platycnemidids

Species

Subspecies

##### Megapodagrionids

##### Gomphids

Species

Subspecies

##### Calopterygids

Species

Subspecies

* Matrona basilaris japonica

##### Coenagrionids

Species

Subspecies

* Pseudagrion torridum hulae

##### Aeshnids

Species

Subspecies

##### Libellulids

Species

Subspecies

##### Other Odonata

Species

Subspecies

#### Other insect species

## Echinoderms

## Other invertebrate species

## See also

* Lists of IUCN Red List endangered species
* List of least concern invertebrates
* List of near threatened invertebrates
* List of vulnerable invertebrates
* List of critically endangered invertebrates
* List of recently extinct invertebrates
* List of data deficient invertebrates

## References

1. ↑ "IUCN Red List version 2016.1". International Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/. Retrieved 4 July 2016.
2. ↑ "Limitations of the Data". Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/initiatives/mammals/description/limitations. Retrieved 11 January 2016.
3. ↑ "2001 Categories & Criteria (version 3.1)". Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/static/categories_criteria_3_1. Retrieved 11 January 2016.

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