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.
Globally, there are about 2,000 species of fireflies, with over 150 species in the U.S. and Canada. This is a general description of the firefly life cycle.Egg â Embryonic Stage: The firefly life cycle begins with an egg.lobally, there are about 2,000 species of fireflies, with over 150 species in the U.S. and Canada. This is a general description of the firefly life cycle. Egg â Embryonic Stage: The firefly life cycle begins with an egg.