We found one of these in our yard tonight on the Front Range of Colorado. Never seen before in the 20 years we've been here! Antheraea polyphemus - A giant silk moth. Wikipedia, the free encyclopedia
Unsure/moth or butterfly
Baorisa Moth Photo, Picture
Macrocilix maia, the Housefly Moth. While it may look like a pair of flies to us, it's more likely that this moth's predators see a pair of stinging/poisonous insects, which in turn, protects the the moth from being eaten.