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Ischnura cervula (Pacific Forktail)BC conservation rank: S5. Yellow List.Description: Male's thorax has blue sides and a black top with two pairs of pale dots; appendages, fig. 6a. Female's thorax is sometimes coloured like the male's (dots elongated), but more often green or tan to pink with dark lines of variable thickness above; the abdomen has a blue tip. Most females darken with age; they often have a vulvar spine. Length: male 29 mm, female 30 mm. Global Range: British Columbia and Alberta south to New Mexico and Baja California (Westfall and May 1996). Faunal element: Cordilleran (see Appendix 2). BC Distribution: Widespread in the southern half of the province to about 55°N (BulkleyValley) Biology: One of the most common damselflies of low and moderate elevations across southern BC. Most common around marshes and the marshy edges of small lakes and ponds (Wm01-02, Wm04-06); the only dragonfly that often flies among dense cattails and bulrushes. Prefers neutral and alkaline waters. It has one of the longest flight seasons of any dragonfly in BC, and is usually one of the first to appear in spring. BC flight period: early April to late October; most records are from mid May to mid August.
Ischnura cervula Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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