CalliphoridaeCalliphoridae2/13/082/13/08

Family Calliphoridae

Blow flies/bottle flies

Genera of greatest forensic importance

1000 described species

Adults

10-12 mm long

Usually metallic coloring

Bristles on meron

Plumose arista

2-3 notopleural bristles

Bristles on Meron

Bristles on Meron

Plumose arista

2-3 notopleural bristles

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Eggs

Deposited on meat, rotting matter

Fecundity: 2000-3000/female over 3 weeks

Hatch with in 24-48 hours

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Larvae

1st instar

Feed near egg mass

Move into less putrid material

3 instars

4 - 21 days

Dispersal

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Pre-Pupae

Disperse--15-20 ft

3 days - 2 weeks

Pupae

3-20+ days

Coloration changes as pupa ages

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Degree Day

Threshold Temperature

Degree day: Number of degrees above threshold temperature in a given day

Accumulated Degree Hours

Each developmental stage has degree hour requirement

Rule of thumb: One degree day results when average temperature for the day is 1 degree over threshold minimum

(max T + min T/2)-threshold=degree days

Calculators

Phormia Regina

Phormia ReginaBlack Blowfly

Throughout US

Most abundant in early spring and fall

55-75 F

10-25+ day life cycle

Eggs: 12-48 hours (17.4 ADD)

Larvae: 4-15 days (122.5 ADD)

Pupae: 3-13 days (174 ADD)

Calliphora sp.Blue Bottle Flies

Calliphora vomitoria, Calliphora vicina, Callphora livida

6-14 mm

Metallic blue, blue-green, purple

Calliphora sp.Blue Bottle Flies

Throughout US

Mostly in cooler months--45-65 F

Shady locations

C. vicina--urban areas

C. vomitoria--rural areas

Calliphora sp.Blue Bottle Flies

Threshold: approx. 27 C

15-36 days

C. vicina: ~21 days

C. vomitoria ~36 days

Any Questions?