Predating for mature adults
This stage will generally last between one and three years, during which time the larvae will act as a voracious predator of other insect larvae, tadpole and even small fish.Unlike most of the other species of insect, including moths and butterflies that go through a pupal stage before emerging as adults the dragonflies however do not pupate.Once the larva's transformation is complete, the newly emerged adult will have to wait several hours before its wings dry out and become strong enough to fly.The dragonfly at this stage is called a teneral which is a Latin word meaning tender or soft or delicate.This is a very critical period in the life cycle of the dragonfly.The tenerals are generally weak and they cannot fly very well.Once the eggs have hatched the first stage in their lifestyle can begin.
Recent research incorporating morphologic and molecular data has led to the re-classification and re-naming of most of the human-infecting diphyllobothriids. Sporadic case reports exist involving several other diphyllobothriid species, although some of the species identifications in these reports are of questionable validity.
There are many people who believe that these insects live only for a day. At the shortest the life cycle of a dragonfly from egg to the death of the adult is about six months.
There are even dragonflies that live for several years as aquatic larvae before they emerge and live for a few months as adults.
This makes them easily exposed to predators, which can also be dragonfly larvae themselves.
Many more of them die when they are knocked down by strong winds or by boats.