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Hagen's Bluet - Enallagma hageni
General Description
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Species Range
Montana Range
Range Descriptions
Native
Observations in Montana Natural Heritage Program Database
Number of Observations: 97
(Click on the following maps and charts to see full sized version)
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Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
The habitat of Hagen's Bluets include marshes, lakes, ponds, including open bog ponds, as well as slow streams. This species tends to occur in more acid waters (Westfall and May 1996, Acorn 2004, Paulson 2009).
National Vegetation Classification System Groups Associated with this Species
Wetland and Riparian
Alkaline - Saline Wetlands
Peatland
Riparian and Wetland Forest
Wet Meadow and Marsh
Food Habits
Larvae feed on a wide variety of aquatic insects, such as mosquito larvae, other aquatic fly larvae, mayfly larvae, and freshwater shrimp.
Adult- This damselfly will eat almost any soft-bodied flying insect including mosquitoes, flies, small moths, mayflies, and flying ants or termites.
Reproductive Characteristics
Male and female Hagen's Bluets meet away from the water, which is a unique characteristic within the Enallagma and among most damselflies; most other species pair up at breeding sites. Copulation also occurs away from breeding sites and tandem pairs arrive at the water together. Female Hagen's Bluets submerge below the waterline and oviposit on floating dead and alive plant stems with males waiting for them above the surface . When the female has completed depositing her eggs and returns to the surface, the male will pull her from the water (with the intent to breed again) (Acorn 2004, Paulson 2009).
Stewardship Responsibility
References
- Literature Cited AboveLegend:
View Online Publication- Acorn, J. 2004. Damselflies of Alberta: flying neon toothpicks in grass. Edmonton, Alberta: University of Alberta Press. 156 pp.
- Paulson, D.R. 2009. Dragonflies and Damselflies of the West. Princeton University Press, Princeton. 535 pp.
Westfall, M.J., Jr. and M.L. May. 1996. Damselflies of North America. Scientific Publishers, Gainesville, Florida. 649 pp.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?- Dunkle, S.W. 2000. Dragonflies through binoculars: A field guide to dragonflies of North America. New York, NY. Oxford University Press. 266 pp.
- Hendricks, P., S. Lenard, D.M. Stagliano, and B.A. Maxell. 2013. Baseline nongame wildlife surveys on the Fort Peck Indian Reservation. Report to the Assiniboine and Sioux Tribes of the Fort Peck Indian Reservation. Montana Natural Heritage Program, Helena, MT. 83 p.
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