Forensic Biology Research Paper
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Introduction
Forensic entomology is a branch of forensic sciences which relies on insects for purposes
of estimating the postmortem interval in criminal proceedings. Forensic entomologists are able to
recover important details about a case by analyzing the life cycles and immigration tendencies of
insects inhabiting the carcass. This paper will, therefore, discuss the background of forensic
entomology, how it works, and why it is relevant in forensic studies. Knowledge of insects' lives
on the decomposing body makes forensic investigators put timelines that are vital in a criminal
investigation. This branch of forensic science not only helps in the estimation of the time of
death but also provides different aspects of the crime scene, like location of death and movement
of dead body.
Brief History
The employment of insects as an investigative tool is as old as recorded history, with the
earliest report in a trial in China in the 13th century. In his book called "The Washing Away of
Wrongs", Song Ci depicted how a murder was committed and discovered just by finding many
flies buzzing around an invisible blood stain on a sickle. This early example indicates that insects
have been known to predict and identify crime scenes for many years (Weidner et al., 2021).
Forensic entomology developed over several centuries with the contributions from Jean Pierre
Mégnin in the 19th century to study insect life cycles on corpses. Mégnin started the modern
development of forensic entomology by classifying the stages of decomposition and the insects
related to them. Picking it up in the 20th century, researchers such as Jerry Payne initiated
systematic works on insect succession in different ecosystems that form the present-day methods
(Payne, 2021). Nowadays, forensic entomology is a rather distinct branch of study and is an
inseparable part of contemporary forensic practice. It is studied in forensic science curricula
across the globe, and forensic entomologists usually provide evidence in trials.
Science Explanation
Forensic entomology, therefore, involves the use of life cycle and colonization patterns of
insects on the dead bodies. The primary concern is on the order, which is the secession of insects,
and this is a cyclic order. For example, blowflies can immediately infest a body and lay eggs in
it, which will result in maggots. These maggots undergo several instars before they form a pupa,
from which adult flies hatch. Thus species found on the corpse and the life stage of those species
give the forensics entomologist a notion of the post-mortem interval (PMI) which is the time of
death. This process encompasses careful scrutiny and evaluation (Aram Jaf et al. , 2021).
Different species of insects are attracted to a body at different stages of decomposition. These
insects can arrive just minutes after death, or days or weeks later. Temperature, environment, and
the condition of the body affect the level of insect activity and, therefore, must be taken into
account when calculating the PMI by forensic entomologists (Matuszewski, 2021).
Other evidence collected by forensic entomologists include investigating the activity and
location of insects. For instance, the presence of some insects can tell whether a body has been
shifted or if the death happened inside or outside (S. Reibe & B. Madea, 2020). Sometimes,
forensic entomologists are also able to establish the existence of drugs or toxins in a body
because these substances influence the developmental stage of insects. Forensic entomologists’
evidence is employed by those in the criminal justice system to either support or negate alibis,
set timelines, and identify suspects (Kenneth G. V. Smith, 2024). This academic approach gives
the kind of accuracy that is sometimes essential to solving intricate criminal investigations.
Real-World Examples
The Case of the Murdered Newborn: A remarkable case of forensic entomology is the
case in Tennessee, where forensic entomologists helped establish the time of death of a newborn
who was dumped in a landfill. The maggots that were recovered from the body were identified to
be blowfly maggots and based on the stages of development, it was concluded that the baby had
been dead for almost 48 hours. With such information, the investigators were able to track and
arrest the mother who had tried to conceal the crime(Haskell & Williams, 2023). The specific
account of the maggots' growth gave timeline that would fit other evidence, to get a conviction.
This case is evidence of how forensic entomology can offer accurate and scientific support to
criminal investigations.
The Body in the Trunk: However, a more recent and horrifying example is the case of a
decomposed body discovered in the boot of a car which was parked in a car park. Expert in this
field of study were able to determine species and the stage of insects, and the conclusion was that
the body had been in the trunk for roughly two weeks (Rains et al. , 2015). This timeline referred
to a case involving the disappearance of a person and the subsequent arrest and conviction of the
culprit. Not only did the analysis of the insects make it possible to determine the time of death,
but it also aided in providing the context for the case that suggested that the body had been
moved. The following are real-life scenarios that show the importance of forensic entomology in
solving cases and getting closure.
Conclusion
Some of the major applications of forensic entomology include estimation of the post-
mortem interval, which is crucial when developing timelines in any investigation. Forensic
entomology is a branch of entomology that helps to analyze the life cycles and the characteristics
of insects to collect vital information about the time of death of the victim to bring justice. With
the development of more and more branches of forensic science, the branch of forensic
entomology is also rapidly developing and providing investigators with new opportunities for
dealing with certain cases. From the use of forensic entomology in numerous cases, it has been
evident that the subject has valuable information in the criminal justice system. With advance in
technology and different methodologies in entomology, the accuracy and usefulness of forensic
entomology will rise, making it even more important in the field of law enforcement and
criminal investigation.
References
Fabiola Tuccia. (2018). Forensic entomology: An overview. Crime Security and Society.
https://search.informit.org/doi/abs/10.3316/informit.660171876494612
Weidner, L. M., Byrd, J., Sutton, L., & Hans, K. R. (2021). Forensic Entomology: An
introduction to the literature of the United States. WIREs. Forensic Science, 3(5).
https://doi.org/10.1002/wfs2.1435
Haskell, N. H., & Williams, R. E. (2023, March 18). Entomology & Death: A Procedural Guide
(2nd Edition) - BioQuipBugs. BioQuipBugs.
https://bioquipbugs.com/product/entomology-death-a-procedural-guide-2nd-edition/
Matuszewski, S. (2021). Post-Mortem Interval Estimation Based on Insect Evidence: Current
Challenges. Insects, 12(4), 314–314. https://doi.org/10.3390/insects12040314
Aram Jaf, Hameed Rashid Ahmed, & Dawood, E. (2021). Forensic entomology: The use of
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Payne, J. (2021). A Summer Carrion Study of the Baby Pig Sus Scrofa Linnaeus. Ecology;
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Kyerematen, R., Boateng, B., Haruna, M., & Vincent, E. Y. (2013, November). Decomposition
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https://www.researchgate.net/publication/259092328_Decomposition_and_insect_succes
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S. Reibe, & B. Madea. (2020). How promptly do blowflies colonise fresh carcasses? A study
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Kenneth G. V. Smith. (2024). A manual of forensic entomology | WorldCat.org. Worldcat.org.
https://search.worldcat.org/title/manual-of-forensic-entomology/oclc/17648947
Rains, G., Tomberlin, J., & Fencott, R. (2015, March 27). Forensic Entomology: International
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