What are you shooting with? Canon.. and Mp-E65 lens maybe? Or are you cropping a lot? Or using Extensions on your Tamron?
It's Nikon D5000, no extension. I cropped them, especially, the eating dragonfly pictures. Some were taken with 1:2 magnification as I scared them away when I tried 1:1 (sorry!!!)
Very impressive set to say the least. This is one area of photography that I really want to learn. Your pictures are just that much more of a motivation.