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Forensic Entomology

The use of insect evidence to answer legal questions (civil and criminal litigation)

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What Information can Insects Provide Investigations?

Forensically Important Timelines

Forensic entomologists calculate the time in which eggs are laid on a victim or decedent. This can provide investigators insight into:

- Time of death

- Time of neglect or abuse

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​Contextual information around remains

- Movement of remains after death

- Potential explanation for superficial postmortem wounds

- Presence of drugs ingested by victim or decedent

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Probable Cause and Environmental Protection

Locard's Principal of Exchange explains that every contact leaves a detectable amount of evidence establishing connection. With filth flies coming into contact with surfaces and living ubiquitously, flies can be used in place of other substrates (such as trash, soil, and water samples) to test for biological or chemical toxins in the environment. 

Services and Training 

Expert Witness

Trainings

Guest Lectures

Samantha J. Sawyer, PhD created an online forensic entomology mini course designed to educate individuals in the basic biology of necrophagous insects, introduction to decomposition ecology, and the appropriate documentation, collection, storage, and shipment of entomological evidence for investigations.

Coming September 2025

Common Questions

Is insect evidence admissible in court?

Yes. Forensic entomology has been submitted in hundreds of cases across the U.S. and meets all standards of admissibility.

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Have you ever testified in court under oath?

Yes, I have testified in both jury trial and deposition. I have testified in both civil and criminal cases.

 

Does your work involve humans or animals?

Both. I have a history working with both human and non-human animal cases.

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Does your work only involve deceased individuals?

No, I have provided opinions on cases where individuals are alive, typically in cases were dependents rely on someone for care.​ Insects can also provide information in environmental contamination where deaths may not have occurred.​​​

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How do I get evidence to you?

Please email me for a mailing address. Evidence must be shipped overnight with a tracking number. Evidence will be returned after processing is complete via priority mail services.

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What type of product should I expect?

I will provide a forensic case report with every case I am presented. I will provide details of my analyses in that report, my expert opinion, and other case specific information. If you would like to see a redacted report, please inquire via email.

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How long does it take between receiving evidence and having a report?

I will always prioritize my case work so that evidence is returned expeditiously. How long it takes to receive a report often depends on the number of insects collected and the complexity of the case. If there is time sensitivity on a particular case, I can accommodate that to the best of my ability. A typical case can take around 2-4 weeks.

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Who can request a report?

Attorneys, investigators, veterinarians, and other individuals involved with investigations.

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I don't know how to collect insect evidence, how can I get help?

Please contact me directly, I can share resources on current trainings with myself or others.

Inquiries

Forensic practitioners interested in utilizing entomological evidence in their case can book a 30 minute consolation in the window to the right.

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Private citizens and other inquiries can be made to:

SJSawyerFE@gmail.com

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