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Changes to the list of Endangered, Threatened & Special Concern species

Reviewing the status of rare and vulnerable species in Massachusetts.

The status of rare and vulnerable species in Massachusetts is dynamic and may change due to many factors such as:

  • our knowledge about their status in the state;
  • changes in biological populations; and
  • our understanding of their habitat requirements. 

Thus, the status of species on the Massachusetts List of Endangered (E), Threatened (T) and Special Concern Species (SC) is reviewed periodically and some changes may therefore be recommended.   

Listing species in Massachusetts is based on three primary factors:

  1. species rarity,
  2. population trends, and
  3. threats to the species in Massachusetts.  

For more information, please read:  Listing Endangered Species in Massachusetts: The Basis, Criteria and Procedure for Listing Endangered, Threatened and Special Concern Species

Species Listing Proposal Form

2023 MESA List Change Proposals

The following table represents species listing proposals submitted to the Natural Heritage & Endangered Species Program (NHESP) by a staff member, received from the public, or received from a member of the Natural Heritage & Endangered Species Advisory Committee (NHESAC). 

Taxonomic group Common Name Scientific Name Proposed List Change
MAMMALS Silver-haired Bat Lasionycteris noctivagans not listed → SC
  Eastern Red Bat Lasiurus borealis not listed → SC
  Hoary Bat Lasiurus cinereus not listed → SC
  Humpback Whale Megaptera novaeangliae Withdrawn
HORSESHOE CRABS American Horseshoe Crab Limulus polyphemus not listed → SC
BUTTERFLIES/MOTHS Golden Borer Moth Papaipema cerina not listed → E
  Acadian Hairstreak Satyrium acadica not listed → T
BEES Parnassia Miner Bee Andrena parnassiae not listed → T
  Macropis Cuckoo Bee Epeoloides pilosulus not listed → T
PLANTS Bog Sedge Carex exilis not listed → T
  Willdenow's Sedge Carex willdenowii not listed → E
  Split-leaved Hawthorn Crataegus schizophylla not listed → E
  Appalachian Bristle-fern Crepidomanes intricatum E → SC
  Pine Barrens Flatsedge Cyperus retrorsa not listed → SC
  Frog Orchid Dactylorhiza viridis not listed → E
  Velvet Rosette-grass Dichanthelium scoparium not listed → E
  Showy Orchid Galearis spectabilis not listed → T
  Loesel's Wide-lipped Orchid Liparis loeselii not listed → T
  Wild Lupine Lupinus perennis not listed → SC
  Winged Loosestrife Lythrum alatum not listed → E
  Prickly-pear Cactus Opuntia cespitosa Taxonomic split (1 E species → 2 E species)
  Hooker's Orchid Platanthera hookeri not listed → E
  Large-leaved Orchid Platanthera macrophylla not listed → T
  Round-leaved Orchid Platanthera orbiculata not listed → T
  Ogden's Pondweed Potamogeton ogdenii E → delist
  Slender Clubmoss Pseudolycopodiella caroliniana not listed → E
  Slender Bladderwort Utricularia subulata SC → T


Proposals are being evaluated and, if approved, will be subject to a Public Hearing and Public Comment Period. 

Contact for Changes to the list of Endangered, Threatened & Special Concern species

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