New York Natural Heritage Program
Ebony Boghaunter
Williamsonia fletcheri Williamson, 1923
Insects
Michael Blust
Family: Emeralds (Corduliidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: S1
A State Rarity Rank of S1 means: Typically 5 or fewer occurrences, very few remaining individuals, acres, or miles of stream, or some factor of its biology makes it especially vulnerable in New York State.

Global Rarity Rank: G4
A Global Rarity Rank of G4 means: Apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
The larva of this rare and elusive glacial relict species was not described until the 1990s (Charlton and Cannings 1993; Mead 2003).

State Ranking Justification [-]
The Ebony boghaunter is seldom encountered due to its secretive nature, scarce breeding habitat, and early flight season. However, there is strong reason to believe that its range has retracted significantly northward toward the Canadian border, possibly due to warming. Populations are inherently vulnerable because they are small and widely scattered (White et al., 2010).

Short-term Trends [-]

Long-term Trends [-]