Biology:List of critically endangered invertebrates
As of July 2016, the International Union for Conservation of Nature (IUCN) listed 987 critically endangered invertebrate species, including 206 which are tagged as possibly extinct.[1][2] Of all evaluated invertebrate species, 5.5% are listed as critically endangered. The IUCN also lists 14 invertebrate subspecies as critically endangered.
No subpopulations of invertebrates have been evaluated by the IUCN.
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.[3] While the category 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".[4]
This is a complete list of critically endangered invertebrate species and subspecies as evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such.
Nemertea species
- Prosadenoporus agricola (possibly extinct)
Annelids
- Mesonerilla prospera
Onychophora
Molluscs
There are 581 mollusc species and 11 mollusc subspecies assessed as critically endangered.
Gastropods
There are 511 gastropod species and six gastropod subspecies assessed as critically endangered.
Stylommatophora
Stylommatophora includes the majority of land snails and slugs. There are 233 species and five subspecies in the order Stylommatophora assessed as critically endangered.
Amastrids
Partulids
Achatinellids
Endodontids
Species
Subspecies
Charopids
Helicarionids
Orthalicids
Rhytidids
Streptaxids
Lauriids
Helicids
Hygromiids
Enids
Other Stylommatophora species
Littorinimorpha
There are 181 species in the order Littorinimorpha assessed as critically endangered.
Hydrobiids
Cochliopids
Bithyniids
Moitessieriids
- Henrigirardia wienini (possibly extinct)
- Spiralix corsica (possibly extinct)
Assimineids
Pomatiopsids
Sorbeoconcha
Architaenioglossa
There are 48 species in the order Architaenioglossa assessed as critically endangered.
Cyclophorids
Diplommatinids
Viviparids
Other Architaenioglossa species
Cycloneritimorpha
Hygrophila
Species
Subspecies
- Bulinus tropicus torensis
Neogastropoda
Other gastropod species
Bivalvia
There are 69 species and five subspecies in the class Bivalvia assessed as critically endangered.
Unionida
There are 66 species and five subspecies in the order Unionoida assessed as critically endangered.
Margaritiferids
Species
Subspecies
- Margaritifera margaritifera durrovensis
Etheriids
- Acostaea rivolii
Unionids
Species
Subspecies
Hyriids
- Glenelg freshwater mussel (Hyridella glenelgensis)
Venerida
Cephalopods
Cnidaria
Arthropods
There are 394 arthropod species and three arthropod subspecies assessed as critically endangered.
Centipedes
Seed shrimps
Arachnids
There are 47 arachnid species assessed as critically endangered.
Harvestmen
Spiders
Other arachnid species
Branchiopoda
Millipedes
Entognatha
- Ceratophysella sp. nov. 'HC' (possibly extinct)
- Delamarephorura tami (possibly extinct)
Maxillopoda
Includes barnacles, copepods and a number of related animals.
Malacostracans
Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 125 malacostracan species and one malacostracan subspecies assessed as critically endangered.
Mysida
- Bermudamysis speluncola
- Sterrer's cave mysid (Platyops sterreri)
Mictaceans
- Mictocaris halope
Isopods
Amphipods
Decapods
There are 106 decapod species and one decapod subspecies assessed as critically endangered.
Parastacids
Gecarcinucids
Atyids
Cambarids
Species
Subspecies
- Procambarus rogersi expletus
Palaemonids
Other decapod species
Insects
There are 195 insect species and two insect subspecies assessed as critically endangered.
Blattodea
Orthoptera
There are 72 species in the order Orthoptera assessed as critically endangered.
Euschmidtiids
Crickets
Acridids
Tettigoniids
Other Orthoptera species
Hymenoptera
Lepidoptera
Moths and butterflies
Beetles
Odonata
Includes dragonflies and damselflies.
Species
Subspecies
- Chlorogomphus brunneus keramensis
- Delphi cordulegaster (Cordulegaster helladica kastalia)
Other insect species
See also
- Lists of IUCN Red List critically endangered species
- List of least concern invertebrates
- List of near threatened invertebrates
- List of vulnerable invertebrates
- List of endangered invertebrates
- List of recently extinct invertebrates
- List of data deficient invertebrates
References
- ↑ "IUCN Red List version 2016.1". International Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/. Retrieved 4 July 2016.
- ↑ "Table 9: Possibly Extinct and Possibly Extinct in the Wild Species (IUCN Red List version 2016-1)". Union for Conservation of Nature and Natural Resources (IUCN). http://www.iucnredlist.org/about/summary-statistics. Retrieved 4 July 2016.
- ↑ "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.
- ↑ "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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