- In southern Arizona, the Blue Dasher (Pachydiplax Longipennis) is one of the most common and easily spotted dragonfly species
- Mature males feature a vibrant pruinose (waxy) blue abdomen, a yellow-striped thorax, and striking metallic green eyes ... females and juveniles are brownish-yellow with distinct black markings
- They are often seen in the "obelisk position"—pointing the tip of their abdomen directly at the sun to minimize heat absorption on hot desert days
- They peak in summer and autumn (mid-April to mid-October)
- They prefer still or slow-moving water, including ponds, marshes, and even swimming pools
- Top viewing spots include Sweetwater Wetlands (Tucson) (known for hosting thousands of Blue Dashers during the summer) and Agua Caliente Park (Tucson) (provides excellent habitat for both larvae and adults)
- Blue Dashers act as natural pest controllers, with a single adult capable of consuming hundreds of mosquitoes, flies, and gnats daily ... their presence is also a positive indicator of freshwater ecosystem health