Skipper antennae are filament like with a slight hook on the end. If the scales are removed from a butterfly's wing what is left is a transparent membrane. The Karner Blue butterfly became extirpated in Ontario around 1991. The Spring Azure is one of the shortest lived butterflies lasting only a couple of days. The male, of some species of butterflies, emits it's pheromones through special scales on their wings.
Some larvae communicate with ants by producing sounds.
Male Monarchs never make the return journey the following spring. Some members of the Skipper family of butterflies can attain flight speeds in excess of 50 kph. Milbert's Tortoiseshells lay eggs in clusters containing upwards of a thousand. Although well documented among birds, it would appear to be a rare and unusual behaviour with butterflies. Many of these facts are covered in more detail within .