One of the delights of summer in 
							many parts of the  
						United States is the arrival of tiny 
							"shooting stars" in the yard. Fireflies or lightning 
							bugs are a type of beetle which produces light by 
							means of a luminescent organ located near their 
							abdomen.
							There are at least two types of 
							fireflies. The ones that live east of the Rocky 
							Mountains have both male and females that blink 
							their lights. On the west side of the Rockies, the 
							adult female glows but does not fly while the male 
							flies but does not glow. The immature larval form of 
							some types of fireflies also light up and are 
							called...you guessed it, glow worms. Isn't nature 
							funny?
							Why do they light up? Well, it is 
							part of their mating ritual used to attract mates. 
							They start blinking at around dusk and the frequency 
							of the flashes increases as the night progresses.