Aeshna eremita    




common name     Lake Darner

habitat
Including but not limited to: lakes, ponds, fens, and bogs(Hutchings and Halstead, 2011).

seasonality
June to September in British Columbia (Paulson, 2009).

identification
Blue or green notched stripes on lateral sides of thorax (Figure 2). Very similar in appearance to Canada Darners (A. canadensis) but different by having a larger size,a notched posterior thoracic stripe, and a black horizontal line bisecting the frons. They are easily differentiated from other congeneric species by their large sizes and their thoracic stripe pattern(Paulson, 2009).

life history
Females oviposit on floating vegetation and in emergent plant stems. Nymphs are aquatic predators among vegetation. Adults are terrestrial and hunt insects in flight (Cannings, 2002). They areoften found in feeding swarms in great numbers (Hutchings and Halstead, 2011).

conservation
Common (Hutchings and Halstead, 2011).

diet info
Both adults and nymphs are predatory (Cannings, 2002).

range
Spans southern Canada from British Columbia to Labrador. Found as far south as Minnesota and New York (Paulson, 2009).

notes
They are the largest of the mosaic darners (Aeshna) in Canada (Paulson, 2009). They can vibrate their wings to generate sufficient heat for flight in low ambient temperatures (Sformo and Doak, 2006).

people
species page authorChen, R.2013 

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=24322

 

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