The sand-and-stone bottomed creek near the intersection of Alexander Street and the Eastern Ontario Trail seems to be prime odonate real estate. Today this was the site of my first encounter with an Arrowhead Spiketail (Cordulegaster obliqua).
This is a female, and the large ovipositor that's the hallmark of the family Cordulegasterdae can easily be seen despite the poor quality of the image. A striking insect, but despite its bold colors and size (roughly 80 mm, maybe a bit more) it is elusive and seldom seen. She wouldn't let me come any closer and this is the only picture I was able to take ... maybe next time ...
