Blue Dasher, White Tail

Pachydiplax longipennisYou have to get pretty close to see the white face on one of NYC’s most common dragonflies, the Blue Dasher (Pachydiplax longipennis). This is a male; as he gets older, his blue abdomen will get more powdery or chalkier looking. Such pruinescence, as it’s called, is caused by wax exuded from the animals’ cuticle. It’s seen on (mostly) males of many species of odonates, including spectacularly the Common Whitetail:Plathemis lydiaPlathemis lydia.

2 Responses to “Blue Dasher, White Tail”


  1. 1 elwnyc August 25, 2016 at 7:45 pm

    The blue dasher is one of my favorite dragonflies, perhaps because it is so common that I have finally learned to recognize it. It is also very cooperative – it perches frequently, and stays long enough for me to take its picture.


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