Deck 11: Forensic Entomology

Question 1

​On a decomposed body, the feeding larvae may have human tissue stored in their crops that can be analyzed to determine:

A)​whether the body was moved after death.
B)​whether the deceased was exposed to either toxic chemicals or recreational drugs.
C)​whether the body was covered, buried, or submerged in water.
D)​whether the deceased was restrained while alive.

Answer 1

B

Question 2

Coffin flies are:​

A)​about the size of fruit flies.
B)​most likely to appear if the victim is concealed or wrapped in plastic or blankets.
C)​an indication that a body was left in a car for several days.
D)​All of these choices.

Answer 2

D

Question 3

In 1855, an entomologist used the concept of insect succession to determine which of four different tenants had murdered an infant that was found within the walls of a house.What was the name of this entomologist?​

A)​Dr.Lee Goff
B)​Bergeret d'Arbois
C)​Dr.David Hall
D)​Jean Pierre Megnin

Answer 3

B

Question 4

​One type of insect typically arrives within minutes after death.Therefore this type of insect is considered to be timekeepers for postmortem intervals.Which type of insect is this?

A)​sexton beetle
B)​flesh flies
C)​blowflies
D)​houseflies

Question 5

The blowfly lifecycle has six stages.How many larval stages are included in these six stages?​

A)​1
B)​2
C)​3
D)​4

Question 6

​Flesh flies:

A)​arrive within minutes of death and feed on the sweat, blood, urine, and feces of the body.
B)​arrive within minutes of death and lay eggs on the body.
C)​arrive within minutes of death and deposit living larvae onto the flesh.
D)​All of the above.

Question 7

The thick skin of the third instar is shed as the maggot prepares to become an adult fly.​

Question 8

One of the earliest cases to use insect evidence to solve a crime was described in the 1412 Chinese work by Sung Tz'u called The Washing Away of Wrongs.​

Question 9

​The decomposition stages of the body are fresh, bloated, decay, active decay, and dry decay.

Question 10

​The number of hours at an adjusted average temperature, using Celsius degrees, that it takes an insect species to reach a particular stage of development is expressed in:

A)​annual degree hours.
B)​adjusted degree hours.
C)​average degree hours.
D)​accumulated degree hours.

Question 11

Blowflies do not lay eggs at night.​

Question 12

Blowfly eggs usually hatch in less than:​

A)​12 hours.
B)​24 hours.
C)​36 hours.
D)​48 hours.

Question 13

​Insects that suck up liquids may get nourishment from a dry, decaying body in a later stage of decomposition.

Question 14

Environmental conditions affect the growth of larvae.Consequently, in the collection of meteorological data, it is suggested that rainfall amounts be recorded for a period of:​

A)​2-3 weeks before the victim's disappearance and 3 to 5 hours after the body was discovered.
B)​2-3 days before the victim's disappearance and 3 to 5 days after the body was discovered.
C)​1-2 days before the victim's disappearance and 3 to 5 days after the body was discovered.
D)​1-2 weeks before the victim's disappearance and 3 to 5 days after the body was discovered.

Question 15

​Blowflies, also known as carrion flies or bottle flies, include:

A)​blue bottles, yellow bottles, and silver bottles.
B)​brown bottles, green bottles, and bronze bottles.
C)​blue bottles, green bottles, and bronze bottles.
D)​blue bottles, green bottles, and silver bottles.

Question 16

​Within minutes of death, odor emitted from a dead body can be detected by blow flies from:

A)​a mile away.
B)​a half-mile away.
C)​a quarter-mile away.
D)​a 50 yard radius.

Question 17

In order to provide the most accurate estimate of postmortem intervals at a crime scene, which type of larvae should be collected?​

A)​the oldest larvae
B)​the youngest larvae
C)​larvae on internal organs
D)​larvae on arms, legs, and head and neck

Question 18

How do the temperatures of feeding maggot masses compare to ambient temperatures?​

A)​They have temperatures of 5°F to 20°F higher than ambient temperature.
B)​They have temperatures of 5°F to 20°F lower than ambient temperature.
C)​They have temperatures of 15°F to 30°F higher than ambient temperature.
D)​They have temperatures of 15°F to 30°F lower than ambient temperature.

Question 19

​The arrival of which type of beetle is associated with the advanced stage of a dead body?

A)​sexton beetle
B)​American carrion beetle
C)​hide beetle
D)​harry rove bettle

Question 20

The lower limit threshold is the temperature below which growth and development cease for an insect.For most insects, what temperature represents their lower limit threshold?​

A)​10°C
B)​15°C
C)​20°C
D)​25°C

Question 21

​As a dead body decomposes, two gases putrescine and _________________ are released that alert blowflies to a possible location to lay their eggs.

Question 22

What part of their anatomy do blowfly larvae breathe through?___________________​

Question 23

Name the three body segments of an insect._____________________________________​

Question 24

Name the two types of beatles that are likely to arrive early on a corpse._____________________​

Question 25

While processing a crime scene for insect evidence, what is the recommended number of maggots per mass to collect?​ _________