Forensic entomology is the study of the insects associated with an animal carcass in an effort to determine elapsed time since death. It was first reported to have been used in 13th Century in China. The life cycle of insects invading the carcass and their larval development pattern may help to assess the time of death. There are two ways of using insects to determine elapsed time since death: Successional waves of insects and maggot age and their development. The insect eggs are laid in batches on the carcass which hatch into a first instar, followed by a second instar and then a third instar larva. The developmental stages in the life span of insects takes a set known time. This time period is based on the availability of food and the temperature. The two main insect groups on carcass are flies (Diptera) and beetles (Coleoptera). Both types of insect look very different at different stages of their lives and can be identified.
Forensic Entomology, Diptera, Coleoptera, Time of death