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Somatochlora albicincta (Ringed Emerald)BC conservation rank: S5. Yellow List.Description: Similar to S. hudsonica, but smaller. Male appendages, fig. 13k; female vulvar lamina, fig. 14l. The thorax sides are brassy green and marked with a white bar, its ends pointed. The English and scientific names refer to narrow white rings between the segments of the abdomen (albicincta means "girdled with white"); the top of segment 10 has a pair of pale spots. Length: male 50 mm, female 50 mm. Global range: Alaska east to Labrador and Newfoundland; south to New Hampshire, New York, Lake Superior, and north of the Great Plains to the Rockies; south through British Columbia and Alberta to Montana and California (Needham et al. 2000). Faunal element: Widespread Boreal (see Appendix 2). BC Distribution: Widespread; the only white-ringed emerald west of the Coast Mountains. Biology: Patrols margins of firm-edged peatland ponds (Wf06, Wf10, Wf50; Wb50-52). and slow streams, and the open, peaty margins of forest lakes. Its habitats usually contain relatively open, poorly vegetated, shallow water. Specimens on the BC coast are larger than usual; some on the Queen Charlotte Islands can be as large as S. cingulata. BC flight period: mid June to mid October; most records from early July to mid-August.
Somatochlora albicincta Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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