They belong to the lepidopteran family Sphingidae. They also eat in a manner similar to hummingbirds, sipping sweet nectar from flowers while hovering near the flower. It pumps blood through a tube that runs from the abdomen to the head, and eventually into the animal's tissues.
Pressure gradients force the blood back to the heart and the process begins again.
Most butterflies are herbivores. Animals are heterotrophs. Females have dark wing margins and a brick-red patch on the top of the hindwing. The undersides of the wings are dark green with a stripe. Males have reduced forelegs.