Wild Iris With Four-Spotted Skimmer
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I thought that I was through with posting about Alaska but I have one more image that I want to display. Aside from being a pretty picture, there’s actually a link between this image and Arizona. The insect depicted in the photo, a Four-Spotted Skimmer, has an enormous range that extends from northern Arizona all the way up to and including substantial parts of Alaska.
I took this picture in a swampy area adjacent to the parking lot behind the hotel that I stayed at in Anchorage for a night before departing to visit the bears. I was taking a walk and I noticed that the low lying and waterlogged land near the parking lot was dotted with wild Irises. I stopped to take a closer look, saw the dragonfly, and made this image.
I originally assumed that the Four-spotted Skimmer displayed in the image was some sort of Alaskan or at least Pacific Northwest species. I was very surprised to discover that these insects also reside in parts of Arizona, specifically, the higher elevations in the northern part of our state. So, there’s a connection between what lives here and what I photographed in Alaska.
How could an insect like this have such an enormous range — one that extends for thousands of miles? I’m guessing that the species may have evolved during an era when cooler and relatively damp conditions prevailed over a huge part of the West, allowing a species that evolved to take advantage of those conditions to proliferate and spread. Today’s much warmer climate nonetheless leaves remnants of an earlier ecosystem that the Four-spotted Skimmer continues to populate.
Image made with a Canon 5Div, 100-400 ISII zoom lens, aperture priority setting, ISO 500, f13 @ 1/640.