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Aeshna septentrionalis (Azure Darner)BC conservation rank: S4. Yellow List. Modified from S3S4 after more collections since 2000 extended its known distribution in the North.Description: Small, similar to A. sitchensis. Thorax stripes are pale blue or green; shape, fig. 7i. The face is blue or green; T-spot, fig. 8b. Male's abdomen has more blue than any other BC darner, the sky-blue spots usually fused to form irregular stripes; upper appendages simple (fig. 9a). Female has blue or yellow-green abdominal spots. Length: male 60 mm, female 57 mm. Global Range: Alaska east to Labrador and Newfoundland; south to New York in the Appalachian Mountains. (Needham et al. 2000). Faunal element: Northern Boreal (see Appendix 2). BC Distribution: A northern species that ranges south only in the mountains and on northern plateaus to about 51°N in the Coast and Rocky mountains. Not known west of the Coast Range or from the Northeast. Biology: The most boreal of our darners. In BC it lives in subalpine peatlands with ponds (e.g., Mf05-08; Wb13). Perches low on tree trunks, or on stones, logs or moss. BC flight period: early July to mid September; all records are from early July to mid August.
Aeshna septentrionalis Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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