Mercury Bluet Damselflies (Coenagrion mercuriale) (top) and Common Blue Damselflies (Enallagma cyathigerum). #SciArt from British Dragonflies (Odonata) (1900) by William John Lucas. Contributed for digitization by Smithsonian Libraries (@silibraries) to #BiodiversityHeritageLibrary. http://www.biodiversitylibrary.org/page/7917493 _________________________________________________ #Damselflies #BlueDamselfly #MercuryBluet #Insects #Entomology #BHLib #Biodiversity #NaturalHistory #NatHist #ScientificIllustration #ScientificArt #OpenAccess #Libraries #Archives #SpecialCollections #LibrariesofInstagram #IGLibraries #IG_Libraries #SmithsonianLibraries










