CBAP - CT's Endangered and Threatened Species
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The Yale Peabody Museum’s Division of Entomology is host to the website of the Connecticut Butterfly Atlas Project.

No laws cover collecting butterflies or other insects on private land. Collecting on State of Connecticut property, however, requires special permission. In addition, butterflies on the list of Connecticut’s Endangered, Threatened and Special Concern Species (State of Connecticut Department of Environmental Protection 1998) are protected by Public Act 89-224, The Connecticut Endangered Species Act.

The protected butterflies are:

Amblyscirtes vialis — Roadside Skipper — Status = SC
Calephalis borealis — Northern Metalmark — Status = E
Celastrina neglectamajor — Appalachian Azure — Status = T
Erynnis brizo — Sleepy Duskywing — Status = T
Erynnis horatius — Harace’s Duskywing — Status = SC
Erynnis lucilius — Columbine Duskywing — Status = E
Erynnis martialis — Mottled Duskywing — Status = SC(ex)
Erynnis persius — Persius Duskywing — Status = E
Euphyes bimacula — Two-spotted Skipper — Status = T
Euphyes dion — Sedge Skipper — Status = T
Callophrys henrici — Henry’s Elfin — Status = SC
Callophrys irus — Frosted Elfin — Status = T
Callophrys polia — Hoary Elfin — Status = SC(ex)
Lycaena epixanthe — Bog Copper — Status = SC
Lycaena hyllusBronze Copper — Status = SC
Callophrys hesseli — Hessel’s Hairstreak — Status = E
Polygonia progne — Gray Comma — Status = SC(ex)
Satyrodes eurydice — Eyed Brown — Status = SC
Speyeria idalia — Regal Fritillary — Status = SC(ex)


Species are categorized as:

E = Endangered, means any native species documented by biological research and inventory to be in danger of extirpation throughout all or a significant portion of its range within the state and to have no more than five occurrences in the state, and any species determined to be an “endangered species” pursuant to the Federal Endangered Species Act.

T = Threatened, means any native species documented by biological research and inventory to be likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range within the state and to have no more than nine occurrences in the state, and any species determined to be a “threatened species” pursuant to the Federal Endangered Species Act, except for such species determined to be endangered by the Commissioner in accordance with section 4 of this act.

SC = Special Concern, means any native plant species or nonharvested wildlife species documented by scientific research and inventory to have a naturally restricted range or habitat in the state, to be at a low population level, to be in such high demand by man that unregulated taking would be detrimental to the conservation of its population or has been extirpated from the state.

SC(ex) = Special Concern, Extirpated from Connecticut.

For information on obtaining permits write to:

Natural Resources Center
Connecticut Department of Environmental Protection
79 Elm Street
Hartford, CT 06106-5127 USA