Flies are the most important species in forensics, the length of death can be determined by identifying changes that occur such as identifying flies found on corpses. The time between flies laying eggs and forming a developmental stage can be used to estimate the time of death. Larval development varies from place to place depending on weather, temperature, and humidity, and so far this research on larval development has never been carried out in Toba Regency. This study used descriptive observational research with a prospective study design. Variables were measured at the same time as the research took place. The study used primary data to determine the genus and length of fly larvae on the carcass of Wistar rats, using 7 (seven) samples of Wistar rats aged 3-4 months and male with a weight of 150-250 grams. This study aimed to obtain data on the development of fly larvae and their relationship to the length of death in Porsea, Toba district. The relationship. From the study results, the development of the life cycle of flies in Porsea District, Toba Regency, namely after a few hours the flies landed on dead mice, and eggs were found in the mice after a few hours to 24 hours. Estimated time of death for one to two days, found first instar larvae with a size of 2 mm - 4.5 mm. Estimated duration of death of two to three days found second instar larvae with a size of 5.2 mm - 13.2 mm. Estimated time of death of four to seven days found in third instar larvae with a size of 11 mm - 20.1 mm. Estimated duration of death of eight to nine days found prepupa with a size of 8.8 mm - 12.4 mm. The estimated length of death is ten to thirteen days pupae with a size of 6.5 mm to 12 mm. Flies are found after thirteen to fourteen days. The conclusion from the study: The estimated length of death on average in Toba Regency is 13-14 days with the identification of the type of fly found Sarcophaga sp. Dan Chrysoma sp.

identification of charge

larva leght

time of death