|One of the most important clues to identification involves knowing where you are. Most butterflies have very specific ranges and are unlikely to be seen anywhere else. This is a good thing, because some groups include similar species that are much easier to tell apart by range than by field marks. For example, Eastern and Western Tailed-Blues look very much alike, but in most places you will find only one or the other, not both. In identifying any butterfly, always check the range maps to see which ones are likely in your region.
Most of the range maps display the distributions of the butterflies indicated in green. This color means that the species resident to Florida. Some butterflies, especially from southern regions, sometimes stray far from their normal haunts. If there is a regular pattern of such straying, we indicate it on the map with in red to display distribution areas beyond the typical range of the species.