Russet-tipped Clubtail claspers

Another Russet-tipped Clubtail dragonfly (Stylurus plagiatus) was spotted during a photowalk at Mulligan PondJackson Miles Abbott Wetland Refuge (JMAWR).

This individual is a male, as indicated by the large russet-colored club at the end of his abdomen, “indented” hindwings (see annotated image, below), and his terminal appendages.

A Russet-tipped Clubtail dragonfly (Stylurus plagiatus) spotted at Mulligan Pond, Jackson Miles Abbott Wetland Refuge, Fairfax County, Virginia USA. This individual is a male.

14 OCT 2016 | JMAWR | Russet-tipped Clubtail (male)

I like the way the hint of red coloration in the fall foliage complements the male’s russet-colored club.

A Russet-tipped Clubtail dragonfly (Stylurus plagiatus) spotted at Mulligan Pond, Jackson Miles Abbott Wetland Refuge, Fairfax County, Virginia USA. This individual is a male. [*]

14 OCT 2016 | JMAWR | Russet-tipped Clubtail (male)

This guy was by far the most cooperative of several Russet-tipped Clubtails spotted at the same location, as evidenced by the fact that he allowed me to shoot 119 photos in a variety of poses. Several of the better photos in the set were cherry-picked for this post; more photos may be published in a follow-up post.

A Russet-tipped Clubtail dragonfly (Stylurus plagiatus) spotted at Mulligan Pond, Jackson Miles Abbott Wetland Refuge, Fairfax County, Virginia USA. This individual is a male. [*]

14 OCT 2016 | JMAWR | Russet-tipped Clubtail (male)

Male dragonflies have three terminal appendages, collectively called “claspers,” that are used to grab and hold female dragonflies during mating: an upper pair of cerci (“superior appendages”); and a lower unpaired epiproct (“inferior appendage”).

A Russet-tipped Clubtail dragonfly (Stylurus plagiatus) spotted at Mulligan Pond, Jackson Miles Abbott Wetland Refuge, Fairfax County, Virginia USA. This individual is a male.

14 OCT 2016 | JMAWR | Russet-tipped Clubtail (male)

(See a full-size version of the original photo, without annotation.)

Notice the epiproct is a large “plate” that spans both cerci, as shown in the full-size version of the preceding photo.

Male Russet-tipped Clubtails have a larger, more colorful club than females of the same species, and their terminal appendages are shaped differently. Compare and contrast the appearance of males and females by looking at the following “Related Resources.”

Related Resources: Digital Dragonflies, presenting high-resolution digital scans of living dragonflies.

  • Genus Stylurus | Stylurus plagiatus | Russet-tipped Clubtail | male | top view
  • Genus Stylurus | Stylurus plagiatus | Russet-tipped Clubtail | female | top view
  • Genus Stylurus | Stylurus plagiatus | Russet-tipped Clubtail | female | side view

Copyright © 2016 Walter Sanford. All rights reserved.

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5 Responses to “Russet-tipped Clubtail claspers”

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    […] 14 OCT 2016 | JMAWR | Russet-tipped Clubtail (male) […]

  5. Russet-tipped Clubtail dragonflies (males, eating) | walter sanford's photoblog Says:

    […] Two Russet-tipped Clubtail dragonflies (Stylurus plagiatus) were spotted during photowalks at Mulligan Pond, Jackson Miles Abbott Wetland Refuge (JMAWR). Both individuals are males, as indicated by the large russet-colored club at the end of their abdomen, “indented” hindwings (see annotated image), and their terminal appendages. […]

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