New York Natural Heritage Program
Delaware River Clubtail
Gomphus septima delawarensis (Donnelly and Carle, 2000)
Insects
Allen Barlow
Family: Clubtails (Gomphidae)

State Protection: Species Of Special Concern
A native species at risk of becoming Threatened; does not qualify as Endangered or Threatened, but have been determined to require some measure of protection or attention to ensure that the species does not become threatened. NYSDEC may regulate the taking, importation, transportation, or possession of any Species of Special Concern as it deems necessary.

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: G2
A Global Rarity Rank of G2 means: Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.


Did you know?
Septima's Clubtail was recently petitioned for possible Federal Endangered Species listing, but only in the southeastern US, thus bypassing protection for the Delaware River endemic, delawarensis.

State Ranking Justification [-]
This is the only New York State endemic odonate, known from just a short stretch of the upper Delaware River. Directed collection efforts in 1994 and 1995 for the (sub)species description removed as many as 80 adults, suggesting the species was abundant at this time (Donnelly and Carle, 2000). Besides a single probable observation in 2008 near Port Jervis, there had been no more verified records in New York until 2014, when a small number of exuviae (shed skins) were again detected at two different known sites. This taxa is considered one of most at-risk odonates in the entire lower 48 sates (Bick 2003).

Short-term Trends [-]

Long-term Trends [-]