Random Insect: Blue dasher

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Mature male blue dasher (Odonata: Libellulidae: Pachydiplax longipennis) photographed 06/28/2014 at Ottawa National Wildlife Refuge east of Bono, Ohio.

Like other dragonflies, blue dashers (Odonata: Libellulidae: Pachydiplax longipennis) are typically found near water. They can be encountered anywhere from southern Canada to northern Mexico, usually near lakes, ponds, marshes, and bogs. Their aquatic nymphs are notable among dragonflies for having a high tolerance for poor water quality and low oxygen.

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Female blue dasher (Odonata: Libellulidae: Pachydiplax longipennis) photographed 06/28/2014 at Metzger Marsh east of Bono, Ohio.

A blue dasher can be identified in part thanks to a distinct set of yellow stripes on a dark thorax. In addition they usually feature amber spots near the bases of their hind wings and have abdomens that are tipped in black. Coloration, however, varies significantly between the sexes. Females and young males are almost completely yellow and black and have reddish eyes like the individual above. Females retain this coloration but the abdomens and eyes of males gradually turn bluish with age.

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Juvenile male blue dasher (Odonata: Libellulidae: Pachydiplax longipennis) photographed 06/28/2014 at Metzger Marsh east of Bono, Ohio.

Males eventually turn almost completely blue, although they do retain their yellow thoracic stripes.

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Mature male blue dasher (Odonata: Libellulidae: Pachydiplax longipennis) photographed 06/28/2014 at Metzger Marsh east of Bono, Ohio.

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About Jeremy Sell

Science and nature nerd.
This entry was posted in Ecology, Entomology, Random Insect and tagged , , . Bookmark the permalink.

One Response to Random Insect: Blue dasher

  1. Great photos and the information was really informative. What a wonderful post.

    Like

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