New York Natural Heritage Program
Horned Clubtail
Arigomphus cornutus (Tough, 1900)

Habitat [-]
This species is found at small marshy ponds and lakes, slow streams, and rivers with mucky bottoms and floating plants.

Associated Ecological Communities [-]
  • Backwater slough
    The aquatic community of quiet to stagnant waters in sloughs that form in embayments and old meanders that are cut off from an unconfined river or marsh headwater stream only at the upstream end by deposition of a levee.
  • Deep emergent marsh
    A marsh community flooded by waters that are not subject to violent wave action. Water depths can range from 6 in to 6.6 ft (15 cm to 2 m). Water levels may fluctuate seasonally, but the substrate is rarely dry, and there is usually standing water in the fall.
  • Oxbow lake/pond
    The aquatic community of a small, shallow, usually stagnant lake or pond of fluvial origin that occurs in an old river meander or oxbow that has been cut off from an unconfined river or marsh headwater stream by deposition of a levee. Typically, the associated river periodically overflows this levee, restoring river water and biota to this lake type.
  • Shallow emergent marsh
    A marsh meadow community that occurs on soils that are permanently saturated and seasonally flooded. This marsh is better drained than a deep emergent marsh; water depths may range from 6 in to 3.3 ft (15 cm to 1 m) during flood stages, but the water level usually drops by mid to late summer and the soil is exposed during an average year.

Associated Species [-]
  • American Emerald (Cordulia shurtleffi)
  • Racket-Tailed Emerald (Dorocordulia libera)
  • Marsh Bluet (Enallagma ebrium)
  • Lancet Clubtail (Gomphus exilis)
  • Chalk-Fronted Skimmer (Ladona julia)
  • Dot-Tailed Whiteface (Leucorrhinia intacta)
  • Widow Skimmer (Libellula luctuosa)
  • Twelve-Spotted Skimmer (Libellula pulchella)