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.
Next time you see a firefly, keep in mind that its flickering isnât just a wonder of the night. Itâs also a unique, and sometimes deadly, language of love. View larger. | Fireflies in May 2015 â just as the big 2015 firefly season was getting revved up â by Matt Pollock. Fireflies are sometimes called lightning bugs. chemical reaction gives off the familiar glow of a firefly. This light is sometimes called âcold lightâ because it generates so little heat. The firefly can regulate the airflow into the abdomen to create a pulsating pattern. âFireflies on top of the wave of grass and overflowing.