Rhode Island
Species of Greatest Conservation Need (2015)
| Scientific Name | Common Name | Subtaxon | S-Rank | State Listing | RSGCN Concern |
|---|---|---|---|---|---|
| Speranza sulphurea | Sulpher Angle Moth | Moths | |||
| Speyeria aphrodite | Aphrodite Fritillary | Butterflies and Skippers | |||
| Sphinx drupiferarum | Plum Sphinx | Moths | |||
| Sphinx kalmiae | Laurel Sphinx | Moths | |||
| Spilodiscus arcuatus | Hister Beetle | Other Beetles | |||
| Spiochaetopterus costarum oculatus | Parchment Tube Worm | Worms, Leeches, and other Annelids | |||
| Spisula solida | Atlantic Surg Clam | Mollusc | |||
| Spizella pusilla | Field Sparrow | Landbirds | |||
| Squalus acanthias | Spiny Dogfish | Marine Fish | |||
| Squilla empusa | Mantis Shrimp | Marine Crustaceans | |||
| Sterna dougallii | Roseate Tern | Waterbirds | Very High | ||
| Sterna hirundo | Common Tern | Waterbirds | Moderate | ||
| Sternula antillarum | Least Tern | Waterbirds | High | ||
| Stichopogon argenteus | A Robber Fly | Other Insects | |||
| Strongylocentrotus droebachiensis | Green Sea Urchin | Marine Invertebrate | |||
| Strophitus undulatus | Creeper | Freshwater Bivalves | |||
| Sturnella magna | Eastern Meadowlark | Landbirds | Moderate | ||
| Stylurus scudderi | Zebra Clubtail | Dragonflies and Damselflies | |||
| Stylurus spiniceps | Arrow Clubtail | Dragonflies and Damselflies | |||
| Succinea wilsoni | Golden Ambersnail | Terrestrial Snails | |||
| Sylvilagus transitionalis | New England Cottontail | Rabbits and Hares | Very High | ||
| Sympistis dentata | Toothed Apharetra Moth | Moths | |||
| Sympistis riparia | Dune Sympistis | Moths | |||
| Synaptomys cooperi | Southern Bog Lemming | Other Mammals | |||
| Tachycineta bicolor | Tree Swallow | Landbirds | |||
| Tautoga onitis | Tautog | Marine Fish | Moderate | ||
| Tergipes tergipes | A Nudibranch | Mollusc | |||
| Terrapene carolina | Eastern Box Turtle | Turtles | Protected | Moderate | |
| Thamnophis s. sauritus | Eastern Ribbonsnake | Snakes | |||
| Tharsalea epixanthe | Bog Copper | Butterflies and Skippers | |||
| Tharsalea hyllus | Bronze Copper | Butterflies and Skippers | |||
| Toxostoma rufum | Brown Thrasher | Landbirds | |||
| Trinectes maculatus | Hogchoker | Marine Fish | |||
| Tringa melanoleuca | Greater Yellowlegs | Shorebirds | |||
| Tringa semipalmata | Willet | Shorebirds | Moderate | ||
| Tyrannus tyrannus | Eastern Kingbird | Landbirds | |||
| Tyto alba | Barn Owl | Landbirds | Endangered | ||
| Uca minax | Red-jointed Fiddler Crab | Marine Crustaceans | |||
| Uca pugilator | Atlantic Sand Fiddler Crab | Marine Crustaceans | |||
| Uca pugnax | Mud Fiddler Crab | Marine Crustaceans | |||
| Uhlorchestia uhleri | Banded Marsh Hopper | Amphipods, Copepods, and Isopods | |||
| Upogebia affinis | Coastal Mud Shrimp | Marine Crustaceans | |||
| Ursus americanus | Black Bear | Other Mammals | |||
| Vermivora cyanoptera | Blue-winged Warbler | Landbirds | Moderate | ||
| Virbia laeta | Joyful Holomelina Moth | Moths | |||
| Vireo flavifrons | Yellow-throated Vireo | Landbirds | |||
| Vireo solitarius | Blue-headed Vireo | Landbirds | |||
| Williamsonia lintneri | Ringed Boghaunter | Dragonflies and Damselflies | Very High | ||
| Xylotype capax | Broad Sallow Moth | Moths | |||
| Zale curema | A Noctuid Moth | Moths |