Download Ch_13_HW_Entomology

Name: _____________________________
Forensic Science
Chapter 13: Forensic Entomology
I. Vocabulary: Define (in your own words) and draw diagrams illustrating the following forensic
terms. You may use your textbook, internet or other resources.
Vocabulary Word
Entomology
Postmortem interval
(PMI)
Carrion
Necrophagous
Instar
Degree-day
Puparia
Definition
(in your own words)
Drawing
(Illustrate the vocabulary
word)
II. Analysis Questions:
1. Complete Activity 13.1 on pages 370-371 by testing your knowledge of the insect world. Try
your best; you will not be deducted points for wrong answers. Staple your quiz to this
packet.
2. Describe the different categories of forensic entomology (Power Point)
a. Medicolegal (criminal):
b. Urban (criminal and civil):
c. Stored Product Pests (civil):
3. How can insects be used to determine postmortem interval? (Power Point)
4. Choose an insect species (like a Honey Bee or Monarch Butterfly) and determine its
taxonomy (p. 374-375 and internet)
a. Kingdom:
e. Family:
b. Phylum:
f. Genus:
c. Class:
g. Species:
d. Order:
5. Describe the four roles that arthropods play in the decomposition of bodies (Power Point).
Arthropod Role
Description
Examples
Necrophages
Omnivores
Predators and Parasites
Incidentals
6. Describe (or draw) the life cycle of a fly. Include all instars. (Power Point)
7. What factors determine how long it will take a body to decompose? (Power Point)
8. What is the difference between PMI and time of death? (Power Point)
9. A body is warm and stiff? Approximately what has been the time since death? (see Table
13.2 on page 379).
10. Describe what occurs during the following stages of decomposition (p. 380-381)
a. Autolysis:
b. Putrefaction or Bloating:
c. Adipocere:
d. Diagenesis
11. Describe the two major groups of insects found on corpses. (p. 384)
Order
# of Wings
Larvae
Type of
metamorphosis
Flies
Beetles
12. Draw a timeline showing what insects can be found on a dead body throughout the
decomposition phase. (p. 384-385)
13. Read Case Study 13.2 on page 386 and then answer the following questions:
a. Why were specimens collected at the scene reared in the laboratory?
b. Why were data on climatic conditions gathered?
14. What are some other uses of insects in forensic science? Describe at least 3. (p. 398)
15. Examine Figure 13.9 on page 401. Describe what a forensic entomologist would do at a
crime scene?