Lestes dryas is a species of damselfly in the family Lestidae, the spreadwings. Its common names include emerald spreadwing, scarce emerald damselfly, and robust spreadwing. This species is native to the Holarctic realm, especially northern parts of Eurasia and North America, and relictual in North Africa. It is about 35 to 42 millimetres (1.4 to 1.7 in) long, with the males generally longer than the females. The males have a wingspan of about 45 millimetres (1.8 in), and the females of about 47 millimetres (1.9 in). Both sexes of L. dryas have largely metallic green bodies with a bronze iridescence, with blue pruinescence developing as they age. This male emerald spreadwing was photographed in Kulna, Estonia.
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