calliphoridae continued february 23, 2009. dichotomous key used to identify classification of...
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Calliphoridae Continued
February 23, 2009
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Dichotomous Key
Used to identify classification of organsims
Di=two
Usually has two couplets
Uses physical, unchanging characteristics
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1. One pair of wings, halters present.....Diptera Two pairs of wings.............................................2
2. Hind legs enlarged for jumping.......Orthoptera Hind legs not as above.........................................3
3. With large unsegmented forceps-like cerci........................................................Dermaptera Cerci absent............................................................4
4. Piercing sucking mouthparts arising from anterior part of head, hemelytra usually present.......................Hemiptera Piercing sucking mouthparts arising from posterior part of head.......................................................................Homoptera
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Adults
10-12 mm long
Usually metallic coloring
Bristles on meron
Plumose arista
2-3 notopleural bristles
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Lucilia sp.
Lucilia sericata, Lucilia cuprina, Lucilia illustris
Bronze Bottle Flies
4.5-10 mm
Smaller than P. regina & Calliphora sp.
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Lucilia sp.
Shiny green abdomen with coppery/bronzy reflections
Strong dorsal setae
Black thoracic spiracle
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Lucilia sp.
Throughout US and Southern Canada
Warm weather fly--75-85 F
1st. genus in area to show up on corpse
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Lucilia sp.
Life cycle: 9-21 days
4-8 generations per year
Temp. optimal mid 80’s
Fly up to 10 miles
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Lucilia sp.
Females strongly attracted to flesh
Myiasis
Potential mechanical vector
Surgical maggots
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Chrysomya rufifacies
Hairy Maggot Blow Fly
6-12 mm
Green, blue, copper, thoracic stripes
White bucca, white spiracle
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Chrysomya rufifacies
Southern US
Warmer times of year--85+ F
Behavior close to Lucilia sp.
Facultatively predacious in 2nd/3rd instar
Usually 2nd to colonize
1-2 days after pioneer species
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Chrysomya rufifacies
Little known--researched
9-12 days, 4-8 generations
Long flight (probably)
Larvae disperse like other green bottle flies, but not as far
Primary and secondary myiasis possible
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Chrysomya megacephala
Oriental Latrine Fly/Big-Headed Blow Fly
6-12 mm
Large red eyes
Stumpy, box-like body
Buca yellowish-orange
Bristles on stem vein
Anterior spiracle blackish brown
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Chrysomya megacephala
Widely distributed over Orient and Australian regions
South Africa, African Islands, Pacific Islands, Brazil
Southern US
Warm weather fly
Nusiance
Adults not easily distrubed
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Chrysomya megacephala
Life cycle: 7-25 days
Larval dispersion orderly
10-20 feet, in soil
Nuisance in human dwellings
Potential to mechanically vector diarrhea bacteria
Accidental myiasis
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Cochliomyia macellaria
Secondary screw worm
5-12 mm
Bright yellow gena, shiny blue-green thorax/abdomen
3 dark logitudinal stripes on thorax
White thoracic spiracle
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Cochliomyia macellaria
Throughout US/parts of Canada
Warmer months
Sunny and shaded locations
rarely recovered from bodies indoors
Max flight range of 15 miles
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Cochliomyia macellaria
9-39 days
10-14 generations per year
Adults live 2-6 weeks
Doesn’t infest living tissue
Mechanical vector for dysentery
Closely related to Cochliomyia hominivorax
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Cochliomyia hominivorax
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Sarcophagidae
Flesh flies
>2000 species
Larvae of most species breed in meat
Difficult to ID species--usually genitalia
Large--4-16 mm
Grey and black, stripes and checkerboard
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Sarcophagidae
Global distribution
Sarcophaga haemorrhoidalis
Mostly attracted to carrion
Fly in rain, may be first to reach corpse
Otherwise arrive after blowflies
Feces
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Sarcophagidae
Females deposit live 1st instar larvae
viviparous or larviviparous
Approx. 30-40 per female
At the moment, not commonly used in investigations
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Any Questions?