New York Natural Heritage Program
Cyrano Darner
Nasiaeschna pentacantha (Rambur, 1842)

Habitat [-]
Thuis is primarily a lentic species in New York where it frequents egdes of medium-sized vegetated lakes and larger ponds, less often along swampy portions of slow flowing rivers. In the southern US where this species is more common, it is associated with lower pH lakes, with abundant emergent and floating vegetation and high concentration of dissolved oxygen and cooler water temperatures (Osborn 2005).

Associated Ecological Communities [-]
  • Eutrophic dimictic lake*
    The aquatic community of a nutrient-rich lake that occurs in a broad, shallow basin. These lakes are dimictic: they have two periods of mixing or turnover (spring and fall); they are thermally stratified in the summer, and they freeze over and become inversely stratified in the winter.

    * probable association but not confirmed
  • Eutrophic pond*
    The aquatic community of a small, shallow, nutrient-rich pond. The water is usually green with algae, and the bottom is mucky. Eutrophic ponds are too shallow to remain stratified throughout the summer; they are winter-stratified, monomictic ponds.

    * probable association but not confirmed
  • Red maple-hardwood swamp*
    A hardwood swamp that occurs in poorly drained depressions, usually on inorganic soils. Red maple is usually the most abundant canopy tree, but it can also be codominant with white, green, or black ash; white or slippery elm; yellow birch; and swamp white oak.

    * probable association but not confirmed

Associated Species [-]
  • Slaty Skimmer (Libellula incesta)
  • Widow Skimmer (Libellula luctuosa)
  • Four-Spotted Skimmer (Libellula quadrimaculata)