Entomology

blowfly lifecycle 2: instar I

- 24 hours later the eggs hatch and larva emerges - black mouth hooks, one spiracle slits near anus size: 5 mm - color: white - time in each stage: 24-27 hours

blowfly lifecycle 4: instar III

- 24-48 hours later the maggots grow - black mouth hooks, covered by fat, three spiracle splits near anus - size: 17 mm - color: white - time in each stage: 130 hours (5 days)

blowfly lifecycle 3: instar II

- 24-48 hours later the maggots grow - black mouth hooks, two spiracle slits near anus, actively feeding - size: 10 mm - color: white - time in each stage: 22-24 hours

blowfly lifecycle 5: pupa

- 8-9 days since the eggs were laid the maggots crawl to a dry place and form pupa easings - immobile, does not feed, dark brown - size: 9 mm - color: light brown - time in each stage: several weeks

blowfly lifecycle 6: adult blowfly

- fly appearance, but smaller with crumpled wings - size: varies - color: black or green

blowfly lifecycle 1: eggs

- within 1-24 hours adult flies lay eggs on the body - found in moist, warm areas (mouth, eyes, ears, anus) - size: 2 mm - color: white - time in each stage: 1-23 hours

a stage in the blowfly's lifecycle that is characterized by immobility and dormancy

pupa

approximate temperature of a maggot mass

24-45 degress celcius

a stage in the blowfly lifecycle that is characterized by active feeding and 3 spiral slits in the anus of the maggots

instar II

a process in which maggots crawl away from the body

maggot trail

favorable conditions for a blowfly to lay ehhs

moist

entomology

study of insects

true or false blowflies do not lay eggs at night

true

true or false insects can provide valuable clues for solving crimes

true

true or false larvae use mouth hooks to help ingest food and move?

true

what is the sequence of the developmental stages for blowflies

egg, larva, pupa

true or false PMI is an estimate of the interval of time between death and when the autopsy begins

false

a stage in decomposition process in which blowflies first arrive to lay eggs

fresh

what is the sequence of the decomposition stages

fresh, bloat, active decay, advanced decay, dry remains

an opening in the body such as a nostril or anus

orifice

what is another term for egg laying?

oviposition

the time between death and the discovery of a body is known as the ___________

postmortem interval

what is a characteristic of a newly hatched blowfly?

will have crumpled wings

how many days does it take for eggs to hatch into larvae?

1-2 days

forensic entomology can help investigators determine ____

TOD

entomologist

a scientist that studies insect activity on decomposing bodies

a research facility in Knoxville, TN, that investigates human decomposition under various conditions

body farm

a description of the wings of blowfly right after it hatches

crumpled