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Interpreting Entomological Evidence at Crime Scenes

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Presentation on theme: "Interpreting Entomological Evidence at Crime Scenes"— Presentation transcript:

1 Interpreting Entomological Evidence at Crime Scenes
Maggots and Murder Interpreting Entomological Evidence at Crime Scenes

2 You may envy me, When you want to snoop
You may envy me, When you want to snoop. But the waiter gets hostility, If you find me in your soup. What am I? A Fly!

3 Calliphora vomitoria Blue bottle fly

4 Piophila nigriceps -

5 Musca domestica – common

6 Sarcophaga carnaria – flesh fly

7 Phaenicia sericata

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9 Some notes for this lab Cocaine speeds up the development of Caliphora (which is sensitive to the effects of drugs) 2-3 days

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11 Example Crime Scene: A homicide victim is found in a wash area along La Cholla Ave. Estimated PMI is 80 hours. Insect species (dead and alive) obtained from the corpse are: A.  found throughout Arizona in urban locations B.  found in cool temperate climates or at an altitude above ft C. found in rural regions of low humidity

12 A. That can be found in termite nests
A T-shirt stained with blood is tied around the victim's neck. It contains insect species: A. That can be found in termite nests B.  That pollinates ironwood scrub, existing in regions of low humidity. The two suspects are: 1. A local jogging enthusiast who regularly runs through the creek route. 2. An interstate truck driver, recently returned from New Mexico via I-17 Through Flagstaff, AZ. Make some inferences from the facts, deducing possible locations where the murder may have occurred and who you think is responsible.


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