Are We Heading Towards Another...
ChatterBank1 min ago
No best answer has yet been selected by bruce5755. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Bruce may be thinking of Mayflies which do only live for a day.
tinytonks is right saying it depends on the species. The average life of an adult butterfly is one to two weeks. The shortest I can find is 2 to 4 days for a North American butterfly called the Spring Azure. On the other hand, butterflies that migrate or hibernate can live 9 months or more.