Enallagma hageni

(Walsh, 1863)

Hagen's Bluet

Enallagma hageni is a in the Coenagrionidae, native to North America. It is one of several Enallagma that radiated during the Pleistocene and is closely related to E. ebrium, with which it forms a mosaic spatial distribution pattern. The species is listed as Least Concern by the IUCN with a stable .

Enallagma hageni by the Smithsonian. Used under a CC0 license.Enallagma hageni 48722675 by Dan MacNeal. Used under a CC BY 4.0 license.Enallagma hageni 48721831 by Dan MacNeal. Used under a CC BY 4.0 license.

Pronunciation

How to pronounce Enallagma hageni: /ɛnəˈlæɡmə ˈheɪɡənaɪ/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Distinguished from the closely related Enallagma ebrium primarily by differences in reproductive structures; the two are morphologically distinct despite genetic similarity. Regional genetic divergence exists between .

Images

Habitat

Associated with wetland including ponds and lakes with emergent vegetation.

Distribution

North America; distribution forms a mosaic pattern with overlapping ranges of E. ebrium, with local dominance of one across extensive areas rather than fine- sympatry.

Diet

Predatory, feeding on small insects captured on the wing.

Life Cycle

Aquatic larval stage (naiad) followed by terrestrial stage. Females deposit on submerged aquatic vegetation, sometimes submerging completely to oviposit.

Behavior

Mating occurs in tandem ; males release females during underwater -laying. are active fliers that hunt by sight.

Ecological Role

in both aquatic (larval) and terrestrial () ; may serve as prey for larger predators.

Similar Taxa

  • Enallagma ebriumClosely related with similar preferences; distinguished by reproductive and regional genetic differentiation; rarely sympatric at local sites despite overlapping ranges.
  • Enallagma civileCongeneric with similar general ; E. civile is more broadly distributed across North America and is a .

Tags

Sources and further reading