Common NameEmerald Spreadwing; Scarce Emerald Damselfly
SeasonalityEarly summer, mid-June to late August (Walker).
IdentificationThe only Lestes in Alberta with bright metallic green upperparts. Male: 36-38 mm long. Metallic green on upper thorax, humeral stripe very thin or absent. Inferior appendages very broad at the tips in lateral view. Pruinosity develops with age to cover the pronotum, parts of the thorax, and segments 8-10. Female: 27-29 mm long. Metallic green above, humeral stripe thin, green of the mesepimeron extending onto the mesinfraepisternum. Does not develop pruinosity. (Walker)