Hawk moths are known for being some of the largest night fliers in the insect world. With wingspans of more than four inches, many species are big enough to comfortably fill the palm of your hand.

The research, involving primroses and hawk moths, suggests that air pollution could be interfering with plant reproduction. A white-lined sphinx pollinating a pale evening primrose flower.Credit...Ron ...

Just as when we humans reach for objects, the hummingbird hawk moth uses its visual sense to place its long proboscis precisely on a flower to search for nectar, according to biologists. This is why ...