Calliphoridae Continued February 23, 2009

Dichotomous Key Used to identify classification of organsims Di=two Usually has two couplets Uses physical, unchanging characteristics

1. One pair of wings, halters present.....Diptera Two pairs of wings Hind legs enlarged for jumping Orthoptera Hind legs not as above With large unsegmented forceps-like cerci Dermaptera Cerci absent Piercing sucking mouthparts arising from anterior part of head, hemelytra usually present Hemiptera Piercing sucking mouthparts arising from posterior part of head Hom optera

Adults mm long Usually metallic coloring Bristles on meron Plumose arista 2-3 notopleural bristles

Lucilia sp. Lucilia sericata, Lucilia cuprina, Lucilia illustris Bronze Bottle Flies mm Smaller than P. regina & Calliphora sp.

Lucilia sp. Shiny green abdomen with coppery/bronzy reflections Strong dorsal setae Black thoracic spiracle

Lucilia sp. Throughout US and Southern Canada Warm weather fly F 1st. genus in area to show up on corpse

Lucilia sp. Life cycle: 9-21 days 4-8 generations per year Temp. optimal mid 80’s Fly up to 10 miles

Lucilia sp. Females strongly attracted to flesh Myiasis Potential mechanical vector Surgical maggots

Chrysomya rufifacies Hairy Maggot Blow Fly 6-12 mm Green, blue, copper, thoracic stripes White bucca, white spiracle

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

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

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

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

Chrysomya megacephala Life cycle: 7-25 days Larval dispersion orderly feet, in soil Nuisance in human dwellings Potential to mechanically vector diarrhea bacteria Accidental myiasis

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

Cochliomyia macellaria Throughout US/parts of Canada Warmer months Sunny and shaded locations rarely recovered from bodies indoors Max flight range of 15 miles

Cochliomyia macellaria 9-39 days generations per year Adults live 2-6 weeks Doesn’t infest living tissue Mechanical vector for dysentery Closely related to Cochliomyia hominivorax

Cochliomyia hominivorax

Sarcophagidae Flesh flies >2000 species Larvae of most species breed in meat Difficult to ID species--usually genitalia Large mm Grey and black, stripes and checkerboard

Sarcophagidae Global distribution Sarcophaga haemorrhoidalis Mostly attracted to carrion Fly in rain, may be first to reach corpse Otherwise arrive after blowflies Feces

Sarcophagidae Females deposit live 1st instar larvae viviparous or larviviparous Approx per female At the moment, not commonly used in investigations

Any Questions?