We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Like most other bugs, their "adult" reproductive phases are usually brief - a week or two. However, their time as eggs, larvae (in this case, caterpillars), and pupae varies depending on species and climate.
Some even migrate (eg Monarchs) and some, like Mourning Cloaks, (photo) hibernate, which is why you sometimes see them fully-fledged on the first warm days of Spring. Tough buggers, live on tree sap.