Long stiff spines on the hind femora. A very large black and yellow gomphid. Robust thorax makes head look disproportionately small. Flies with abdomen hooked downward. A yellowish species marked with brown and black.
Appendages whitish with a distinctive shape.
A dark species, squarish, yellow spot on abdominal segments 2 to 7, reduced on others. Yellowish white appendages. The Endangered Dragonfly Fauna of New Jersey. In Karlin, Eric F., ed. Studies, Ramapo College of New Jersey.