Identifying Insects with Spectroscopy

Locard's Lab

Entomology, that is the study of insects, can provide vital information during a forensic investigation. After an individual dies their body begins to undergo a complex decomposition process almost immediately, attracting a variety of insects along the way who wish to colonise, feed on the temptingly putrefying remains and reproduce.

Specialists have been taking advantage of this fact for hundreds of years, allowing us to discover that the types of insects present on a cadaver and the age of these insects can prove invaluable in estimating how much time has passed since the victim died (known as the post-mortem interval). Simply put, certain species prefer the decomposing corpse at different stages in the decay process, and with the right information, investigators can study the insects and their ages and begin to develop a kind of timeline.

https://www.flickr.com/photos/sharman/6331634 https://www.flickr.com/photos/sharman/6331634

Currently, accurately identifying species and establishing the development stage of an insect can…

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