List of vulnerable invertebrates
As of July 2016, the International Union for Conservation of Nature (IUCN) lists 2178 vulnerable invertebrate species. 12% of all evaluated invertebrate species are listed as vulnerable. The IUCN also lists 47 invertebrate subspecies as vulnerable. No subpopulations of invertebrates have been evaluated by the IUCN. For a species to be assessed as vulnerable to extinction the best available evidence must meet quantitative criteria set by the IUCN designed to reflect "a high risk of extinction in the wild". "Endangered" and "critically endangered" species also meet the quantitative criteria of "vulnerable" species, and are listed separately . See: List of endangered invertebrates, List of critically endangered invertebrates. Vulnerable, endangered and critically endangered species are collectively referred to as "threatened species" 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. 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." This is a complete list of vulnerable invertebrate species and subspecies as evaluated by the IUCN. Molluscs. There are 879 mollusc species and 18 mollusc subspecies assessed as vulnerable. Gastropods. There are 828 gastropod species and 16 gastropod subspecies assessed as vulnerable. Stylommatophora. Stylommatophora includes the majority of land snails and slugs. There are 339 species and six subspecies in the order Stylommatophora assessed as vulnerable. Vertiginids. Species Subspecies Helicids. Species Subspecies Hygromiids. Species Subspecies Other Stylommatophora. Species Subspecies Littorinimorpha. There are 324  species and seven subspecies in the order Littorinimorpha assessed as vulnerable. Hydrobiids. Species Subspecies Sorbeoconcha. There are 55 species in the order Sorbeoconcha assessed as vulnerable. Architaenioglossa. Species Subspecies Hygrophila. Species Subspecies Neogastropoda. There are 27 species in the order Neogastropoda assessed as vulnerable. Bivalvia. There are 49 species and two subspecies in the class Bivalvia assessed as vulnerable. Unionida. There are 37 species and two subspecies in the order Unionoida assessed as vulnerable. Unionids. Species Subspecies Iridinids. Species Subspecies Cnidaria. There are 204 species in the phylum Cnidaria assessed as vulnerable. Anthozoa. There are 202 species in the class  Anthozoa assessed as vulnerable. Scleractinia. There are 199 species in the order Scleractinia assessed as vulnerable. Arthropods. There are 1080 arthropod species and 29 arthropod subspecies assessed as vulnerable. Arachnids. There are 47 arachnid species assessed as vulnerable. Maxillopoda. Maxillopoda includes barnacles, copepods and a number of related animals. There are 71 species in the class Maxillopoda assessed as vulnerable. Calanoida. There are 47 species in the order Calanoida assessed as vulnerable. Harpacticoida. There are 18 species in the order Harpacticoida assessed as vulnerable. Malacostracans. Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 307 malacostracan  species and 14 malacostracan subspecies assessed as vulnerable. Isopods. Species Subspecies Amphipods. There are 56 amphipod species and four amphipod subspecies assessed as vulnerable. Hadziids. Subspecies Niphargids. Species Subspecies Decapods. There are 224 decapod species and seven decapod subspecies assessed as vulnerable. Cambarids. Species Subspecies Insects. There are 608 insect species and 15 insect subspecies assessed as vulnerable. Orthoptera. There are 137 species in the order Orthoptera assessed as vulnerable. Hymenoptera. There are 155 species in the order Hymenoptera assessed as vulnerable. Lepidoptera. Lepidoptera comprises moths and butterflies. There are 128 species and ten subspecies in the order Lepidoptera assessed  as vulnerable. Nymphalids. Species Subspecies Beetles. There are 50 beetle species assessed as vulnerable. Odonata. Odonata includes dragonflies and damselflies. There are 129 species and five subspecies in the order Odonata assessed as vulnerable. Gomphids. Species Subspecies Coenagrionids. Species Subspecies