University of Alberta Museums Search

Scientific Name 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…

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).

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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…

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).

Read More + 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).