Pupil size abnormalities can sometimes signal disease. 1  Glaucoma: A mid-dilated pupil can be a sign of glaucoma.  Aneurysm: An aneurysm that pushes on certain blood vessels in the brain can cause a dilated pupil as well as other symptoms.
Quick Answer. The total lifespan of a lightning bug is anywhere from one to two years. However, the bulk of that lifespan is spent underground in the larval phase. Adult lightning bugs have very short life spans, averaging just two months in the wild. Continue Reading.
About this Website. This site is a educational resource on fireflies, also known as lightning bugs. We've got information on why fireflies are disappearing and what you can do to help. We've also got answers to frequently asked questions about fireflies, from why they glow to what they eat.