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Somatochlora minor (Ocellated Emerald)BC conservation rank: S5. Yellow List.Description: The English name refers to two yellow eye-like spots on each side of the thorax. Otherwise, this species is scarcely marked, though the short, dark abdomen has some pale spots at the base. Male's appendages, fig. 13b. Female's vulvar lamina is long, perpendicular to abdomen vulvar lamina (fig. 14a). Length: male 43 mm, female 46 mm. Global Range: Yukon and British Columbia east to Labrador and Newfoundland; south to Connecticut, Michigan, Minnesota, Montana, Colorado and Oregon (Needham et al. 2000). Faunal element: Southern Boreal (see Appendix 2). BC Distribution: Throughout BC, but not recorded in the Northwest north of about 56ºN; on the coast, known only from northern Vancouver Island. Biology: Uncommon inhabitant of warm streams, both gently and rapidly flowing ones, in peatlands and forests (e.g., Wf01, Wf04-05). The stream bottom can contain any material from rocks to soft mud and organic matter. Females have a more conspicuous vulvar lamina than other emeralds; they use this spout-like egg-laying device to tap eggs into the water or into moss on stream banks. BC flight period: early June to mid September; the bulk of the records lie between mid July and early August.
Somatochlora minor Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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