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Leucorrhinia intacta (Dot-tailed Whiteface)BC conservation rank: S5. Yellow List.Description: Distinguished by a yellow spot - actually a pair of dots - on abdominal segment 7. On mature males, this spot stands out against the dark abdomen. Immature males, many mature females and very few mature males have yellow on other segments; occasionally, these marks may be red on mature females. The male's lower appendage is forked, the tips widespread. Hamule, fig. 16f; vulvar lamina, fig. 17d. Length: male, female 34mm. Global Range: British Columbia east to Nova Scotia; south to California, Kansas, Tennessee and Virginia (Needham et al. 2000). Faunal element: Transition (see Appendix 2). BC Distribution: Mostly found in southern valleys; east of the Rocky Mountains it occurs as far north as the Fort Nelson area. Biology: Most at home in warm, non-acidic lowland waters, unlike the other whitefaces in our region. Common in ponds (it likes organically rich places, such as farmyard ponds) and the marshy corners of lakes in the south. Typical site associations are Typha and Schoenoplectus marshes (Wm05-06). BC flight period: early May to late August; all records are from mid May to late July.
Leucorrhinia intacta Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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