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: species rarity, population trends, and threats to the species in Massachusetts.  Details about the listing criteria process can be found in Listing Endangered Species in Massachusetts: The Basis, Criteria and Procedure for Listing Endangered, Threatened and Special Concern Species pdf format of Listing Endangered Species in Massachusetts
.  The following changes to the MESA list have been recommended by the Natural Heritage & Endangered Species Program.  

The original proposal for each of these recommended changes has been reviewed by at least three outside experts and, in some cases, resulted in a change reflected in to the final proposal.

Summary Table of Proposed Changes to the MESA List pdf format of Summary of Potential 2014 MESA List Changes

Part 1:        Species Changes to the MESA List – Delistings

                  Species Changes to the MESA List – Additions

Part 2:        Listing Status Changes for Species Currently on the MESA List

 

Part 1:

Species Changes to the MESA List - Delistings
Scientific NameCommon NameOriginal ProposalFinal Proposal
Accipiter striatus Sharp-shinned Hawk pdf format of Accipitier straitus delist proposal
SC → delistSC → delist
Ammodramus henslowii Henslow's Sparrow pdf format of Ammodramus henslowii delisting proposal
E → delistE → delist
Anax longipes Comet Darner pdf format of Anax longipes delist proposal
SC → delistSC → delist
Asio otus Long-eared Owl pdf format of Asio otus delist proposal
SC → delistWithdraw proposal (keep as Special Concern); conduct/coordinate more survey work targeting this species
Crocanthemum dumosum Bushy Rockrose pdf format of Crocanthemum dumosum Delist Proposal
SC → delistSC → delist
Digrammia eremiata Three-lined Angle Moth pdf format of Digrammia eremiata delisting proposal
T → delistT → delist
Ferrissia walkeri Walker's Limpet pdf format of Ferrissia walkeri delisting proposal
SC → delistSC → delist
Floridobia winkleyi New England Siltsnail pdf format of Floridobia winkleyi delisting proposal
SC → delistWithdraw proposal (keep as Special Concern); conduct/coordinate more survey work targeting this species
Linum intercursum Sandplain Flax pdf format of Linum intercursum Delist proposal
SC → delistSC → delist
Rhionaeschna mutata Spatterdock Darner pdf format of Rhionaeschna mutata delist proposal
SC → delistSC → delist
Satyrium favonius Oak Hairstreak pdf format of Satyrium favonius delisting proposal
SC → delistSC → delist

 

Species Changes to the MESA List - Additions
Scientific NameCommon NameOriginal ProposalFinal Proposal
Linnaea borealis ssp. americana American Twinflower pdf format of Linnaea borealis ssp. americana Listing Proposal
Watch Listed → SCWatch Listed → SC
Malaxis unifolia Green Adder's Mouth pdf format of Malaxis unifolia Listing proposal
Watch Listed → TWatch Listed → T
Moneses uniflora One-flowered Pyrola pdf format of Moneses uniflora listing proposal
Watch Listed → SCWatch Listed → SC
Neottia bifolia (syn. Listera australis) Southern Twayblade pdf format of Neottia bifolia List Proposal
Watch Listed → TWatch Listed → T

The Plant Watch List (WL) is an unofficial, non-regulatory list of plants of known or suspected conservation concern that NHESP is interested in tracking. 

 

Part 2:

Listing Status Changes for Species Currently on the MESA List
Scientific NameCommon NameOriginal ProposalFinal Proposal
Alnus viridis ssp. crispa Mountain Alder pdf format of Alnus viridis ssp. crispa Status Change proposal
T → SCT → SC
Cicindela limbalis Bank Tiger Beetle pdf format of Cicindela limbalis Status Change Proposal
SC → TSC → T
Cypripedium parviflorum var. makasin (currently E) Yellow Lady's-slipper pdf format of Cypripedium parviflorum var. makasin Listing Proposal
Replace with C. parviflorum, all varieties (makasin, parviflorum, and pubescens), list as EReplace with C. parviflorum, all varieties (makasin, parviflorum, and pubescens), list as E
Falco peregrinus Peregrine Falcon pdf format of Falco peregrinus status change proposal
E → TE → T
Mimulus moschatus Muskflower pdf format of Mimulus moschatus Status change proposal
E → TE → T
Neoligia semicana Northern Brocade Moth pdf format of Neoligia semicana status change proposal
SC → EWithdraw proposal; keep as Special Concern until life history is better understood
Polycelis remota Sunderland Spring Planarian pdf format of Polycelis remota status change proposal
E → SCE → SC
Solidago macrophylla Large-leaved Goldenrod pdf format of Solidago macrophylla Status Change proposal
T → SCT → SC
Zanclognatha martha Pine Barrens Zanclognatha pdf format of Zanclognatha martha status change proposal
T → SCT → SC