Overview of Invertebrate Animal Data

Overview of Invertebrate Animal Data

NatureServe Explorer provides comprehensive conservation status and taxonomic information for invertebrate animal species native to the United States and Canada in the taxonomic groups noted below with an asterisk (*). Invertebrate records in NatureServe Explorer represent those species groups for which there is sufficient information known to reasonably categorize their status and distribution. Other invertebrate species not in these groups that may need conservation attention are also included. These records collectively represent less than 5% of known described U.S. and Canadian invertebrates. See Classification of Vertebrates and Invertebrates for the source of invertebrate names used in NatureServe Explorer.

Distribution information is complete for asterisked (*) groups, except giant silkworm and royal moths, notodonid moths, tiger moths, bumble bees, stoneflies, and mayflies for which distribution information is only provided for those species globally at risk (i.e., with global conservation status ranks of GX to G3). All invertebrate species recorded in NatureServe Explorer have been classified according to major references or recent literature, and most have been assigned a global conservation status rank. National status under the U.S. Endangered Species Act and the Committee on the Status of Endangered Wildlife in Canada are provided where applicable. This information is continually reviewed and updated in the NatureServe Central Databases in order to reflect the latest taxonomic treatments, ongoing inventory efforts, and new status assessments. NatureServe Explorer is updated periodically from the NatureServe Central Databases, and new invertebrate groups are regularly added to the databases.

Invertebrate Records in NatureServe Explorer
(Native and Exotic)
Known U.S.
Known Canadian Distribution Total Species and Subspecies
Species Subspecies Species Subspecies
All Invertebrates5,9202410026,455
Corals and other Cnidarians1100055
Freshwater Mussels*2471600341
Freshwater Snails*194300832
Terrestrial Snails*35015002,097
Worms, Leeches, and Other Annelids1700070
Fairy, Clam, and Tadpole Shrimps*2700096
Other Crustaceans47400169
Butterflies and Skippers*34798001,486
Giant Silkworm and Royal Moths*1760086
Sphinx Moths*11000130
Notodontid Moths*11000141
Underwing Moths*89600115
Papaipema Moths*4300053
Tiger Moths*26000159
Other Moths3978004,080
Tiger Beetles*494900276
Other Beetles2,20313005,900
Ants, Wasps, and Bees00000
Dragonflies and Damselflies*299500500
Other Insects1832001,998
Millipedes and Centipedes28000317
Diplurans, Springtails and Proturans44000188
Spiders and Other Chelicerates921001,904
Other Invertebrates1100060
"*" Denotes groups for which native species are comprehensively covered in NatureServe Explorer.
Note: These records include 57 invertebrates known to be exotic in the United States or Canada.

Invertebrate Animals by NatureServe Conservation Status
(Native Only)
Invertebrate Species Groups Potentially Extinct
(GX, GH)
At Risk (G1, G2, G3) Apparently Secure (G4, G5) Unrankable (GU) Not Yet Ranked (GNR)
Freshwater Mussels*241388230
Freshwater Snails*7998000
Terrestrial Snails*213319803
Fairy, Clam, and Tadpole Shrimps*052200
Butterflies and Skippers*04929411
Giant Silkworm and Royal Moths*021500
Sphinx Moths*02900
Notodontid Moths*07310
Underwing Moths*078200
Papaipema Moths*1142710
Tiger Moths*032300
Tiger Beetles*0123700
Dragonflies and Damselflies*02727002



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