This is the giant robber fly Promachus bastardii. That name seems to mean "the bastard's champion." I understand the champion part, at least; these are carnivorous flies that take large prey. They're big, hairy, aggressive, and loud. In close-up they're unexpectedly cute, with their bulging eyes and blond facial hair.
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I'd only seen this species in ones and twos, and always on trips to the north, so I was pleased to find a good population relatively close to home at Kinnickinnic State Park. They aren't brightly colored, but their brown is very rich and their white stripes are snazzy. I especially like how the white stripe on the thorax is outlined in black to make it stand out more.
A damselfly eating a moth is like a toddler eating spaghetti. They just can't do it cleanly, or maybe they don't care to.
I noticed this fly poised at the tip of a twig and went to see if I could get a picture before it flew off. After a few shots, I realized it wasn't going anywhere. The fly had succumbed to an infection by the fungus Entomophthora muscae, which causes its victims to climb to a high place and adopt a stereotyped posture before dying in a shower of spores. The fungus even chooses the time of death: late evening, so the spores don't dry out in the heat of the day.
Some of the white spores are still stuck to the fly's bristles, and I believe the wide raised ridges on its abdomen are a result of swelling as the fungus grew inside it.
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Female Rainbow Bluets aren't quite as colorful as the males, but they're exceptionally handsome damselflies, with pale green underneath and almost solid black above.
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The Rainbow Bluet is one of my favorite Odonates -- a damselfly colored like a tropical bird. The most reliable place I know to find them is Lake Louise State Park, near the Iowa border, where they coexist with Orange Bluets and purple Variable Dancers. The fact that all this color occurs in Minnesota seems like some kind of mistake.
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