Sunday, June 18, 2017

Hagen’s Bluet

Hagen’s Bluets are among a suite of damselflies that are difficult to identify—unless you are an expert in a lab with a microscope. Yet these creatures are pretty and I find myself taking photos even though the prospects for naming them are slim. I shared this photo, taken on 16 June 2017 at the Minnesota Landscape Arboretum in Carver County, with my dragonfly guru, Scott King. To my surprise, he replied that this damselfly is a Hagen’s Bluet. Scott wrote, “the upper appendages slope downward, giving it a kind of wedge shape.” (The appendages are the structures at the very end of the abdomen.) You can enlarge this photo and almost see this trait.

Hagen’s Bluets are common near ponds and lakes across much of northern North America. They are named after Hermann August Hagen, a 19th century German entomologist. In 1867 he became curator of Harvard’s Museum of Comparative Zoology, where he enjoyed the title of Professor of Entomology.


  1. Beautiful... Greetings Dan! Am now located in Corpus Christi, Texas, after a lifetime of California. Just got my first two photographs of Odes, and used your photos for identification. God Bless. Photography by Nicole

  2. Glad to help! I am really just a beginner too—I have only been chasing dragonflies for the past seven or eight years.