DEEP is excited to be getting back to our new normal consistent with the direction of Governor Lamont and as a result of the rapidly improving COVID-19 situation in Connecticut. Starting no later than June 1, all customer facing services will resume normal business operations. For detailed information for what this means at DEEP and for the public we serve, visit our "New Normal" website: DEEP New Normal Information

Endangered, Threatened and Special Concern Species Fact Sheets and Other Related Links

Connecticut Endangered, Threatened and Special Concern Species Fact Sheets


Puritan Tiger Beetle

Freshwater Mussels

Dwarf Wedgemussel (U.S. Fish and Wildlife Service)

A Field Guide to the Freshwater Mussels of Connecticut

Freshwater Mussels and the Connecticut River Watershed (Nedeau, 2008)


Rusty Patched Bumble Bee (U.S. Fish and Wildlife Service)

Connecticut Bumble Bee Guide (Tracy Zarrillo, The CT Agricultural Experiment Station)


Moth Decline in the Northeastern United States (News of the Lepidopterists’ Society, Volume 54, Number 2)


Connecticut Butterfly Atlas Project

Connecticut Butterfly Association, Publications


Periodical Cicadas (Brood 2)

Dragonflies and Damselflies

A Conservation Status Assessment of Odonata for the Northeastern United States (Northeast Regional Conservation Needs Grant Program Report, 2014)

Rare Habitats

Native Plant Trust (formerly known as the New England Wildflower Society)

Go Botany: Native Plant Trust (plant identification)


NatureServe Explorer - a source for information on more than 65,000 plants, animals, and ecosystems of the United States and Canada. Explorer includes particularly in-depth coverage for rare and endangered species.

Content last updated on December 18, 2020.