Forensics test

You add the durations of the previous stages to find how many hours it took the fly to reach its current instar.

Alger mortis- the cooling of the body after death

for the first 12 hours after death the body loses 1.4 Fahrenheit per hour and after the first 12 hours the body loses 0.7 Fahrenheit per hour

Rigor mortis - body stiffening

Liver mortis- blood settled at parts of body closest ton the ground leaving discoloration on body