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.
As far as insect life spans go, bed bugs crawl the earth for longer than most â tapping out around the 10-month marker, according to bedbugs.org. And while that 10-month window is true for most, some are thought to live up to a year. A bed bug life cycle includes multiple stages.