The largest damselfly in the Northeast is a Southwestern species that has been expanding its range our way for the last century. The Giant Spreadwing Archilestes grandis can be up to 2.4″ long, as big as a medium-sized dragonfly.
I spotted two males in the Bronx and had a very hard time getting a usable image. (Previous to getting my new camera: there’s always next year… one hopes.) Studied them intently through the binoculars, however: highlights include the bright blue eyes and wide yellow stripe on the thorax.
Someone posted a picture of a pair mating at this location on iNaturalist two days previous to my sighting. Let’s hope the pesticides spread in this wetlands and pond complex at the NY Botanical Garden don’t preclude a return of this impressive species next season.
For those keeping count, I’ve now seen 12 species of damselflies in NYC and all have lived to tell the tale! That includes two spreadwing species in the Bronx; I’ve yet to see any spreadwings in Brooklyn. Amongst the non-spreadwings, the Familiar Bluet and the Fragile Forktail are the most frequently spotted.