Forensics, Entomological Evidence
by Science Source
Title
Forensics, Entomological Evidence
Artist
Science Source
Medium
Photograph - Photograph
Description
Entomological evidence, September 22, 1986. These third stage black blow fly (Phormia regina) larvae were recovered from the body of Sylvia Hunt, a murder victim found wrapped in a carpet on a Connecticut roadside. Blow fly larvae were feeding on, and moving in and around, the body. Pale and dark brown blow fly puparia were recovered, along with 4,000 larvae, for laboratory study. An autopsy revealed that the victim, Sylvia Hunt, had been stabbed 15 times. Forensic entomologist William Krinsky determined from climate and insect evidence that blow flies had deposited eggs on the corpse seven days earlier. The carpet pattern matched one in the room occupied by a suspect. The insect and carpet evidence helped convict him of first-degree murder. Each female blow fly deposits about 250 eggs in the natural openings of the body and open wounds. The eggs hatch into first-stage maggots within 24 hours. These feed and then molt into second-stage maggots, which feed for several hours, and then molt into third-stage maggots. Masses of third-stage maggots may produce heat, which can raise the temperature around them more than 10° C. After more feeding, the third-stage maggots move away from the body and metamorphise into adult flies.
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February 20th, 2013
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