The Spangled Skimmer is easily differentiated from similar-looking brown-and-yellow and/or blue dragonflies by its distinctive black-and-white pterostigmas located along the leading edge of all four wings (toward the wingtips).
Notice the following female doesn’t look as “fresh” as the females spotted during May.
Female Spangled Skimmers have a pair of flanges beneath their eighth abdominal segment (S8) that are used to scoop water when laying eggs (oviposition), hence the family name “Skimmer.” Remember that all dragonflies and damselflies have a 10-segmented abdomen, numbered from front to back.
Immature male Spangled Skimmers and immature/adult female Spangled Skimmers (shown above) are nearly identical in appearance except for their terminal appendages.
Contrast the astounding difference in appearance between immature male and adult male Spangled Skimmers.
Copyright © 2015 Walter Sanford. All rights reserved.