occasionally, when a corpse is significantly infested with insects, the exterior of the bag will consist of larvae and other adult insects. every surface of the bag, especially the inside corners, must be carefully examined for insects that may have moved away from the body due to change in temperature when the body was removed from the death scene. it is critical that the entomologist work quickly and efficiently during the autopsy to prevent further insect development throughout the body. this will assist in calculating a correct pmi. if clothing is found on the corpse, it is gathered and evaluated for insect evidence that is then photographed with macro lenses. as the insects are gathered, a record is to be kept that explains which location of the body insects were found. this is essential when insect sampling is delayed until the time of autopsy. therefore, it is useful to compare crime scene photos to the autopsy photos, to see changes that occurred within that time frame.