Eastern Pondhawk dragonfly (female)

An Eastern Pondhawk dragonfly (Erythemis simplicicollis) was spotted during a photowalk with Michael Powell along Deephole Point Road at Occoquan Bay National Wildlife Refuge (OBNWR).

This individual is a female, as indicated by her green coloration and white terminal appendages.

15 SEP 2020 | OBNWR | Eastern Pondhawk (female)

Look closely at the full-size version of the preceding photo. Notice the subgenital plate, a black upside-down “shark fin” located beneath abdominal segment eight.

Underneath Segment 8 there is either an ovipositor or a subgenital plate, depending upon the species [of dragonfly]. Both structures are for laying eggs and extend over Segment 9 and possibly beyond. Source Credit: Dragonflies of the North Woods, by Kurt Mead.

Remember that “Segment 8 and 9” refers to abdominal segments eight and nine (of 10), numbered from front-to-back.

Related Resource: Eastern Pondhawk dragonflies, a photo-illustrated guide to the identification of male- and female terminal appendages.

Copyright © 2020 Walter Sanford. All rights reserved.

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