These antennae are also farther apart at the base than other butterflies. There are about 2,00 different species of Skippers. The skull is the bony structure of the head that encloses the brain and supports the jaws. No insects have a skull. The southern dogface butterfly, Colias cesonia , is a yellow butterfly that is also known as the dog's head butterfly.
Males have brighter coloration than females.
The caterpillar is green with black and yellow stripes. Slow flying butterflies fly about 5 mph. The sperm can fertilize a female's eggs. In butterflies and moths, sperm are transferred to the female in packets called spermatophores. A spermatophore is a packet containing sperm that male butterflies and moths transfer to the female during mating.