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Somatochlora franklini (Delicate Emerald)BC conservation rank: S5. Yellow List.Description: Named for its slender body - obvious in males. The long, narrow abdomen is widest at segment 9; the side of the thorax has one pale spot, often obscured with age. The wings are short, just 3/4 the length of abdomen, and the hindwings have a dark spot at the base. Male's appendages, fig. 13c; vulvar lamina, fig. 14c. Length: male 50 mm, female 45 mm. Global Distribution: Alaska east to Labrador and Newfoundland; south to New Hampshire, New York, Michigan, Minnesota and north of the Great Plains to the mountains of British Columbia and Alberta (Needham et al. 2000). Faunal element: Widespread Boreal (see Appendix 2). BC Distribution: East of Coast Range from about 51°N in the mountains of southcentral BC to valleys and plateaus in the far North. Biology: A northerner, becoming scarcer in the southern parts of its range, where it lives at higher elevations. Usually flies with Aeshna sitchensis, but rarer than the darner, at least in the south. Can be common in the right habitat. Prefers shallow, moss-bottomed bogs and fens evenly vegetated with sedges or horsetails (Wf07-Wf10). or flooded fens with moss, shrubs, sedges and forbs (e.g. Wf 02); in these habitats, open patches of water are usually not visible from a distance. Males hover frequently, pivoting while stationary. BC flight period: mid June to early September; most records from early July to early August.
Somatochlora franklini Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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