Step 1. Be aware the same species of dragonfly may appear differently depending upon gender, age, and natural variation. Some species display sexual dimorphism; in contrast, both genders look virtually identical for some species. Finally, females of some species display polymorphism (also known as polychromatism).
The following slideshows/photo galleries show several species of dragonflies that may be spotted at Huntley Meadows Park easily, near the beginning of “dragonfly season.” Remember that every photo in each set shows a single species; notice the appearance of individual specimens varies considerably. All photos were taken at Huntley Meadows Park unless labeled otherwise (see information in brackets to the right of some hyperlinks to photo sources).
A. Common Whitetail dragonflies (Plathemis lydia)
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Common Whitetail dragonfly | mature male
Common Whitetail dragonfly | immature male
Common Whitetail dragonfly | female
Common Whitetail dragonfly | female
Common Whitetail dragonfly | young male
Common Whitetail dragonfly | young male
Common Whitetail dragonfly | male
Common Whitetail dragonfly | male
Common Whitetail dragonfly | male
Photo Sources:
B. Great Blue Skimmer dragonflies (Libellula vibrans)
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Great Blue Skimmer dragonfly | mature male
Great Blue Skimmer dragonfly | immature male
Great Blue Skimmer dragonfly | immature male
Great Blue Skimmer dragonfly | young male
Great Blue Skimmer dragonfly | young male
Great Blue Skimmer dragonfly | immature female
Great Blue Skimmer dragonfly | immature female
Great Blue Skimmer dragonfly | mature female
Great Blue Skimmer dragonfly | mature female
Great Blue Skimmer dragonfly | mature female
Great Blue Skimmer dragonfly | mature female
Great Blue Skimmer dragonfly | mature female
Great Blue Skimmer dragonfly | mature female
Great Blue Skimmer dragonfly | mature female
Photo Sources:
C. Spangled Skimmer dragonflies (Libellula cyanea)
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Spangled Skimmer dragonfly | male
Spangled Skimmer dragonfly | immature male
Spangled Skimmer dragonfly | immature male
Spangled Skimmer dragonfly | immature male
Spangled Skimmer dragonfly | immature male
Spangled Skimmer dragonfly | immature female
Spangled Skimmer dragonfly | immature female
Spangled Skimmer dragonflies | mating pair (in wheel)
Photo Sources:
Beware of look-alikes!
Some dragonflies look very similar to other dragonflies of a different species/gender. Here are a couple of look-alikes you’re likely to see at Huntley Meadows Park.
A. Common Whitetail versus Twelve-spotted Skimmer
Common Whitetail dragonfly | female
Twelve-spotted Skimmer dragonfly | female
B. Great Blue Skimmer versus Slaty Skimmer
Great Blue Skimmer dragonfly | immature male
Slaty Skimmer dragonfly | immature female
Photo Sources:
Step 2. Learn to identify male-versus-female terminal appendages.
All 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”). Female dragonflies have a pair of cerci (superior appendages) that have little or no function.
Two (2) female terminal appendages, as shown in inset photo.
Three (3) male terminal appendages, as shown in inset photo.
Photo sources:
Related Resource: Odonate Terminal Appendages
Step 3. Spend time in the field, literally. Take time to look carefully. Search fields near water (sometimes far from water) where you may find immature- and female dragonflies. BEWARE of chiggers and ticks!
Step 4. Useful references
Use the following resources to know the species of odonates you’re likely to see at a specific location and when to look for a specific species.
A. Species lists
B. Identification Guides
Step 5. Dragonhunter’s Credo: Shoot first (photos, that is); ask questions later. (Repeat it like a mantra.)
- Get a shot, any shot; refine the shot gradually. Good shots for easier identification: top view (including pterostigmata near wing tips); side view; face; terminal appendages.
- Post known- and unknown specimens on Project Noah: Dragonflies and Damselflies of Huntley Meadows Park.
- Follow a few well-known dragonhunters (virtually, that is) in order to see what they’re seeing.
Related Resources:
Editor’s Note: On Saturday, 25 January 2014, I had the honor of co-presenting a program called “Flying Dragons” with Kevin Munroe, Park Manager, Huntley Meadows Park. Kevin invited me to talk about how to make the transition from a beginner- to intermediate/advanced-intermediate dragon hunter. I prepared this photoblog post related to my part of the program, called “Five steps to the next level of dragonfly spotting.”
Copyright © 2013-2014 Walter Sanford. All rights reserved.