A Southern Fortnight, Part 5 – Southern Spreadwing damselflies (mating pairs, in tandem)

The Backstory: A Southern Fortnight

For the first two weeks during May 2015, Southern Spreadwing damselflies (Lestes australis) were observed at a vernal pool and nearby drainage ditch in the forest at Huntley Meadows Park. I spotted approximately six males and several females during the fortnight. Their sudden disappearance seemed to coincide with a population explosion of Eastern Pondhawk dragonflies (Erythemis simplicicollis) in mid-May. Eastern Pondhawks, especially females, are voracious predators with a penchant for preying upon damselflies.


The following annotated image illustrates some of the reproductive anatomy of male and female Southern Spreadwings.

A mating pair of Southern Spreadwing damselflies (Lestes australis) spotted at Huntley Meadows Park, Fairfax County, Virginia USA. This pair is in tandem; the female is laying eggs (oviposition).

08 MAY 2015 | HMP | Southern Spreadwing (mating pair, in tandem)

The male uses his claspers to hold the female by her neck as he guides her to places where she can lay eggs (oviposit).

A mating pair of Southern Spreadwing damselflies (Lestes australis) spotted at Huntley Meadows Park, Fairfax County, Virginia USA. This pair is in tandem; the female is laying eggs (oviposition).

08 MAY 2015 | HMP | Southern Spreadwing (mating pair, in tandem)

The female uses her ovipositor to insert eggs into vegetation (endophytic oviposition).

A mating pair of Southern Spreadwing damselflies (Lestes australis) spotted at Huntley Meadows Park, Fairfax County, Virginia USA. This pair is in tandem; the female is laying eggs (oviposition).

08 MAY 2015 | HMP | Southern Spreadwing (mating pair, in tandem)

A mating pair may spend up to an hour in tandem, although in my limited experience, tandem egg-laying lasted approximately 10-15 minutes.

A mating pair of Southern Spreadwing damselflies (Lestes australis) spotted at Huntley Meadows Park, Fairfax County, Virginia USA. This pair is in tandem; the female is laying eggs (oviposition).

07 MAY 2015 | HMP | Southern Spreadwing (mating pair, in tandem)

Both sexes average two matings during lifetime. Source Credit: Paulson, Dennis (2011-12-19). Dragonflies and Damselflies of the East (Princeton Field Guides) (Kindle Location 1577). Princeton University Press. Kindle Edition.

A mating pair of Southern Spreadwing damselflies (Lestes australis) spotted at Huntley Meadows Park, Fairfax County, Virginia USA. This pair is in tandem; the female is laying eggs (oviposition).

07 MAY 2015 | HMP | Southern Spreadwing (mating pair, in tandem)

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Copyright © 2015 Walter Sanford. All rights reserved.

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