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Coenagrion angulatum (Prairie Bluet)BC conservation rank: S3S4. Blue List. Surveys east of the Rocky Mountains in 1997 changed the status from S1S2 to S4, but we have modified the rank since to indicate our lack of knowledge of the species. Further collecting perhaps will show this to be a common species in the Northeast.Description: The top of the thorax has undivided blue stripes. Abdominal segment 2 has a black mark on top, but usually none on the sides. Appendages, fig. 3c. Female yellow-green to tan, marked with black; the bases and sides of abdominal segment 8 are mostly pale, and the tops of segments 9 and 10 mostly black. Length: male 28 mm, female 31 mm. Global Range: British Columbia, Alberta and Northwest Territories east to Ontario, south to Iowa, South Dakota and Montana (Westfall and May 1996). Faunal element: Western (see Appendix 2). BC Distribution: East of the Rocky Mountains in the Peace River and Fort Nelson regions. Biology: Common at grassland ponds and forest marshes (Wm01, Wm04-07) on the northern Great Plains and adjacent boreal forests, but little-known in BC. BC flight period: late May to early August; all records come from mid June. Management and protection considerations: Wetlands, particularly in low lying areas, always run the risk of being drained, filled for development or polluted; undoubtedly many wetlands in the Peace River region, especially around towns, farmland and hydroelectric installations already have been lost. Management practices that ensure the continued viability of wetlands along lakeshores and around ponds should be followed. Remaining ponds and marshes that appear suitable for this species should be protected. The impacts of development, land drainage, logging, livestock trampling and harmful water runoff should be minimized
Coenagrion angulatum Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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