New York Natural Heritage Program
Extra-striped Snaketail
Ophiogomphus anomalus Harvey, 1898
Insects
Ophiogomphus anomalus Clark Shiffer
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: S2S3
A State Rarity Rank of S2S3 means: Imperiled or Vulnerable in New York - Very vulnerable to disappearing from New York, or vulnerable to becoming imperiled in New York, due to rarity or other factors; typically 6 to 80 populations or locations in New York, few individuals, restricted range, few remaining acres (or miles of stream), and/or recent and widespread declines. More information is needed to assign a single conservation status.

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?
In New York, there are six species of Snaketail dragonflies that co-occur in the Upper Hudson River: Extra-striped Snaketail (Ophiogomphus anomalus), Pygmy Snaketail (Ophiogomphus howei), Brook Snaketail (Ophiogomphus aspersus), Rusty Snaketail (Ophiogomphus rupinsulensis), Maine Snaketail (Ophiogomphus mainensis) and Riffle Snaketail (Ophiogomphus carolus).

State Ranking Justification [-]
The Extra-striped Snaketail is known to occur in nine counties in eastern New York State, with no population estimates determined (New York Natural Heritage Program 2009). It has been recently observed in large rivers of eastern New York in low numbers compared to other Ophioigomphid species present in these waters. In one known location, on the Upper Delaware River near Port Jervis, the species seems to have suffered a decline in population (New York Natural Heritage Program 2009). In addition, there appear to be a number of threats to this species, as it is intolerant of pollution, and the species is narrowly distributed in New York State, with no known western New York populations (New York Natural Heritage Program 2009).

Short-term Trends [-]

Long-term Trends [-]