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.
Gestation of a House Fly. Like many insects, the common house fly experiences a four-phase life cycle, beginning when a fertilized female finds a suitable location for laying her eggs. The gestation of a house fly egg is only 24 hours, and infestations spread at alarming rates. Larvae emerge from their eggs and begin feeding.