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Aeshna interrupta (Variable Darner)BC conservation rank: S5. Yellow List.Description: The scientific name comes from the distinctly broken thorax stripes, usually on males found on BC's coast (fig. 7b); interior populations normally have complete narrow stripes (fig. 7c-d). This variation gives the species its English name. The stripes are usually yellow-green below and blue above. The face is green-yellow to pale blue with a black line. Pale areas on females are usually green or yellow, but some are blue. Male's appendages simple (fig. 9a). Length: male 70 mm, female 66 mm. Global Range: Alaska east to Newfoundland; south to West Virginia, Wisconsin, Iowa, Nebraska, New Mexico and California (Needham et al. 2000). Faunal element: Southern Boreal (see Appendix 2). BC Distribution: Widespread. Biology: Common in BC. Lives in many habitats from northern and mountain peatlands (Wf01, 05-08; Wb13, 50-52) to cattail and bulrush marshes (Wm05-06) and temporary pools (e.g. Wm04, Wm06). This is the characteristic darner of grassland ponds (e.g., Wm06-07 and Gs01-03). BC flight period: mid May to early November; most records range from early July to late September.
Aeshna interrupta Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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