Stream Cruiser dragonfly (female)

The following photo gallery features a Stream Cruiser dragonfly (Didymops transversa) spotted along the upper segment of “Loop Trail” at Accotink Bay Wildlife Refuge, Fairfax County, Virginia USA.

Male– and female Stream Cruisers are very similar in appearance: a white facial bar and a single white stripe on the side of the thorax are key characteristics of Didymops transversa. This individual is a female as indicated by the pair of white terminal appendages (cerci) at the end of its abdomen. Notice the differences between female- and male terminal appendages, as shown in the following slideshow. See a full-size version of the composite image shown in Slide 2: female appendages are shown in the background photo; male appendages are shown in the inset photo.

This slideshow requires JavaScript.

Thanks to Mr. Chris Hobson, Natural Areas Zoologist with the Virginia Natural Heritage Program, Virginia Department of Conservation and Recreation, for providing species descriptors paraphrased in this post.

Related Resources: Odonate Terminal Appendages.

Copyright © 2013 Walter Sanford. All rights reserved.

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10 Responses to “Stream Cruiser dragonfly (female)”

  1. Eastern Pondhawk dragonflies | walter sanford's photoblog Says:

    […] appendages may be used to differentiate males and females for many types of dragonflies, such as Stream Cruisers (Didymops […]

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    […] Stream Cruiser dragonfly (female) […]

  6. A sampler of male dragonfly claspers (Part 2) | walter sanford's photoblog Says:

    […] Stream Cruiser dragonfly (female) […]

  7. Stream Cruiser dragonfly (female) | walter sanford's photoblog Says:

    […] Cruisers are similar in appearance. This individual is a female as indicated by the pair of white terminal appendages (cerci) clearly visible at the end of its […]

  8. Stream Cruiser dragonflies (males) | walter sanford's photoblog Says:

    […] male dragonflies have three terminal appendages: two (2) cerci; and one (1) epiproct. All three appendages are white. Male Stream […]

  9. Another female Stream Cruiser? | walter sanford's photoblog Says:

    […] individual is a female as indicated by the pair of white terminal appendages (cerci) at the end of her abdomen, clearly visible in the following […]

  10. Stream Cruiser dragonfly (female) | walter sanford's photoblog Says:

    […] 10 APR 2017 | Accotink Bay Wildlife Refuge | Stream Cruiser (female) […]

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