 This “hairy maggot blow fly” is the most common maggot found on corpses, and its consistent developmental time is extremely helpful when establishing a post mortem interval.However, "C. rufifacies" can have the opposite effect since its second and third instar larvae are known to be predacious, feeding on other maggots that might have colonized the body first.In addition, "C. rufifacies" are known to be cannibalistic as when the second and third instars feed on young first instars.