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22 Cards in this Set
- Front
- Back
Blowflies, also known as carrion flies or bottle flies, include:
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green bottles, blue bottles, and bronze bottles
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True or False? Insects that suck up liquids may get nourishment from a dry, decaying body in a later stage of decomposition.
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False
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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?
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Bergeret d'Arbois
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Within minutes of death, odor emitted from a dead body can be detected by blow flies from
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a mile away
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The blowfly lifecycle has six stages. How many larvae stages are included in these six stages? |
three
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True or False? The thick skin of the third instar is shed as the maggot prepares to become an adult fly.
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False
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In order to provide the most accurate estimate of postmortem intervals at a crime scene, which type of larvae should be collected?
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the oldest larvae |
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True or False? 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"
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False |
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While processing a crime scene for insect evidence, what is the recommended number of maggots per mass to collect?
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50 |
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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 |
accumulated degree hours |
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Name the two types of beetles that are likely to arrive early on a corpse. |
clown beetle and curinam carrion beetle
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Name the three body segments of an insect |
head, thorax, abdomen |
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The arrival of which type of beetle is associated with the advanced stage of a dead body?
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hide beetle |
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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?
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blowflies |
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True or False? Blowflies do not lay eggs at night. |
True |
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Flesh flies: |
arrive within minutes of death and deposit living larvae onto the flesh |
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The lower limit threshold in the temperature below which growth and development cease for an insect. |
10 degree Celsius |
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Blowfly eggs usually hatch in less than |
24 hours |
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How do the temperature of feeding maggot masses compare to ambient temperatures? |
They have temperatures of 5 degrees F to 20 degrees F higher than ambient temperatures |
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True or False? The decomposition stages of the body are fresh, bloated, decay, active decay, and dry decay. |
True |
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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: |
1-2 weeks before the victim's disappearance and 3 to 5 days after the body was discovered |
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As a dead body decomposes, two gases putrescence and _____________________ are released that alert blowflies to a possible location to lay their eggs. |
Cadaverine |