The calico pennant is a colorful, beautifully marked dragonfly. A key identifier for this species is the dark spot that occurs short of the wing tip (the subterminal dark spot): this spot is positioned next to the leading edge of the wing, and it does not extend as a band to the trailing edge of the wing.
Females and young males have yellow wing veins, and bright yellow heart-shaped spots on the abdomen.
Mature males have pink wing veins, and bright red heart-shaped spots on the abdomen.
Similar species: The Halloween pennant (C. eponina) has similar colors and wing markings, but the dark spot positioned short of the wing tip runs as a band all across the wing, from leading edge to trailing edge.
Learn more about this and other dragonflies on their group page.