• Kenneth J. Tennessen


Cordulegastridae is a relatively small family, with two genera and 10 species in North America. The nymphs are large and elongate with jagged palpal teeth, divergent wing sheaths, numerous long and short setae, and acutely tipped abdomen. The two genera found in North America, Cordulegaster and Zoraena, differ in the configuration of the basal suture of the prementum, the orientation of the posterolateral spines on abdominal segments 8 and 9 and several other characters. Each genus has five species, identification of which is relatively difficult. Cordulegastridae nymphs inhabit flowing water, mainly small rivulets and streams and are relatively long-lived, the life cycle requiring at least four years to complete.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Kenneth J. Tennessen
    • 1
    • 2
  1. 1.Florida State Collection of ArthropodsGainesvilleUSA
  2. 2.WautomaUSA

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